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'''NFTs''' (short for '''non-fungible tokens''') are unique digital assets recorded on a blockchain. Unlike fungible assets such as Bitcoin or traditional currencies, which are interchangeable unit for unit, each NFT has distinct properties or metadata that set it apart from every other token.[web:18][web:16]

NFTs can represent many kinds of digital or token-linked items, including artwork, collectibles, in-game items, music, event access, domain names, and membership perks.[web:18][web:23] The term became widely known through digital art markets, but NFTs are better understood as a technical method for proving ownership, authenticity, and transfer history for a specific digital item or right.[web:18][web:26]

This article explains the core vocabulary commonly used in NFT and wider Web3 discussions. It is written as a glossary for readers who want a practical introduction to the language of NFT projects, marketplaces, wallets, communities, and blockchain-based ownership.[page:2][web:17]

== Overview ==

An NFT is usually created through a smart contract on a blockchain. The token’s record may include or point to metadata, such as the item’s name, traits, image, media file, or associated rights information.[web:16][web:23] Because the token is unique, it is described as “non-fungible,” meaning it cannot be swapped on a one-for-one basis with an identical equivalent in the way a standard cryptocurrency token can.[web:18][web:19]

NFT ecosystems involve more than the token itself. They also depend on wallets, marketplaces, blockchain networks, creator communities, file storage systems, and smart-contract standards that define how tokens are issued and transferred.[web:16][web:19] As a result, NFT terminology often overlaps with broader crypto vocabulary such as gas fees, private keys, decentralized networks, and DeFi.[web:16][web:20]

== Core terms ==

=== Non-fungible token ===

A '''non-fungible token''' is a digital asset with a unique identifier recorded on a blockchain.[web:18][web:16] Its uniqueness distinguishes it from fungible tokens like ETH or BTC, which are interchangeable with other units of the same kind.[web:18][web:19]

=== Fungible token ===

A '''fungible token''' is an interchangeable crypto asset where one unit is equivalent to another unit of the same token.[web:19] Common examples include cryptocurrencies used as means of payment, exchange, or settlement within blockchain networks.[web:16][web:19]

=== Blockchain ===

A '''blockchain''' is a distributed ledger maintained by a decentralized network of computers, often called nodes.[web:16] In the NFT context, it stores transaction history and token ownership records, allowing participants to verify transfers without relying on a single central database.[web:16][web:18]

=== Smart contract ===

A '''smart contract''' is self-executing code on a blockchain that defines how tokens are created, transferred, or managed.[web:16] NFT collections commonly rely on smart contracts to control minting, royalties, metadata behavior, and ownership logic.[web:16][web:18]

=== Metadata ===

'''Metadata''' is the descriptive data attached to or referenced by an NFT.[web:23] It may include the token name, image, animation, properties, attributes, creator information, and links to associated files stored on-chain or off-chain.[web:23][web:26]

=== Wallet ===

A '''wallet''' is software or hardware used to store private keys and interact with blockchain assets.[web:16][web:23] In NFT use, a wallet lets a user hold tokens, sign transactions, connect to marketplaces, and prove control over a blockchain address.[web:16][web:18]

=== Private key ===

A '''private key''' is a cryptographic secret that gives control over a wallet and its assets.[web:16] Anyone with access to the private key can generally authorize transactions, which is why wallet security is one of the most important concepts in NFT ownership.[web:16]

=== Public address ===

A '''public address''' is the wallet address visible on the blockchain and used to send or receive assets.[web:16] It is not the same as a private key, and it can usually be shared publicly for receiving NFTs or cryptocurrency.[web:16]

== Creation and sales ==

=== Minting ===

'''Minting''' is the process of creating an NFT on a blockchain.[web:18][web:17] When an NFT is minted, the blockchain records the new token and associates it with a wallet address under the rules of the relevant smart contract.[web:16][web:18]

=== Collection ===

A '''collection''' is a group of NFTs issued under a common project or smart contract.[web:16][web:20] Collections often share branding, visual style, trait systems, and community goals, even when each token in the set remains unique.[web:20]

=== Drop ===

A '''drop''' is the release of a new NFT project or batch of tokens to the public.[web:19] Drops may occur at a scheduled time and can involve public sales, allowlists, raffles, or free claims depending on the project’s design.[web:19][web:17]

=== Floor price ===

The '''floor price''' is the lowest listed price for an NFT in a collection on a marketplace at a given time.[web:16][web:17] It is often used as a rough indicator of market demand, though it does not guarantee the value or sale price of any specific token.[web:16]

=== Marketplace ===

An '''NFT marketplace''' is a platform that facilitates the creation, listing, buying, and selling of NFTs.[web:16] Marketplaces also commonly provide collection pages, transaction histories, offer systems, and wallet connections.[web:16][web:18]

=== Royalties ===

'''Royalties''' are payments intended for creators from secondary sales of NFTs.[web:17] Royalty models vary by marketplace and contract design, and their practical enforcement has become more complex as NFT trading venues have adopted different policies.[web:17]

== Technical standards ==

=== ERC-721 ===

'''ERC-721''' is a token standard widely used for creating unique NFTs on Ethereum.[web:19] It provides a common interface so wallets, marketplaces, and applications can recognize and interact with non-fungible tokens in a consistent way.[web:19]

=== ERC-1155 ===

'''ERC-1155''' is a multi-token standard that can support both fungible and non-fungible assets in one contract design.[web:17] It is often used in gaming and asset-heavy applications because it can be more flexible and efficient than issuing every asset type under separate contracts.[web:17]

=== Contract address ===

A '''contract address''' is the blockchain address of the smart contract that manages a token collection.[web:16] It helps users identify the original token contract and can be used to distinguish authentic collections from imitators.[web:16]

=== On-chain ===

'''On-chain''' means data or activity recorded directly on the blockchain.[web:23] In NFT discussions, this may refer to ownership records, smart-contract logic, or sometimes metadata and media stored directly on-chain rather than on external systems.[web:23]

=== Off-chain ===

'''Off-chain''' means data stored outside the blockchain itself.[web:23] Many NFTs keep the ownership token on-chain while storing large media files or portions of metadata elsewhere for cost and scalability reasons.[web:23][web:26]

== Costs and trading ==

=== Gas ===

'''Gas''' is the computational fee required to perform operations on certain blockchains.[web:19] NFT users may pay gas when minting, listing, transferring, or buying tokens, depending on how the network and marketplace handle transaction costs.[web:19]

=== Gas fees ===

'''Gas fees''' are the actual transaction fees paid to compensate the network for processing blockchain actions.[web:19] They can rise significantly during periods of heavy demand, which has made fee awareness an important part of NFT participation.[web:19]

=== Gas war ===

A '''gas war''' occurs when users raise transaction fees to compete for priority in a popular mint or sale.[web:19] This can make launches expensive and chaotic, especially when demand far exceeds supply.[web:19]

=== Secondary sale ===

A '''secondary sale''' is the resale of an NFT after its initial mint or first purchase.[web:17] Much NFT market activity happens on secondary markets, where price discovery depends on buyer demand, rarity, reputation, and broader market conditions.[web:17][web:20]

=== Sweep the floor ===

To '''sweep the floor''' means to buy many of the lowest-priced NFTs in a collection.[web:16] Traders may do this to consolidate supply, signal confidence, or attempt to push the collection’s floor price upward.[web:16]

== Community slang ==

=== HODL ===

'''HODL''' is crypto slang for holding an asset rather than selling it.[web:23] In NFT communities, the term can also imply conviction in a project’s long-term value, culture, or future utility.[web:23][web:20]

=== Whale ===

A '''whale''' is a person or entity that holds a large amount of cryptocurrency or valuable digital assets.[web:23] In NFT markets, whales can strongly influence floor prices, trading sentiment, and perceived collection momentum.[web:23]

=== Degen ===

A '''degen''' is slang for a participant known for taking speculative or high-risk positions in crypto or NFT markets.[web:16] The term is often used casually inside Web3 communities and may carry either admiration or criticism depending on context.[web:16][web:20]

=== Utility ===

'''Utility''' refers to the practical function or benefits attached to holding an NFT.[web:23] Examples can include event access, in-game use, governance rights, gated communities, or other member benefits tied to token ownership.[web:23]

=== PFP ===

'''PFP''' stands for “profile picture” and commonly refers to NFT collections designed for use as social identity images.[web:17] PFP projects often emphasize community, recognizable branding, and rarity traits across a large set of tokens.[web:17]

=== FOMO ===

'''FOMO''' means “fear of missing out.”[web:17] In NFT markets, it describes buying behavior driven by urgency, hype, or concern that prices will rise before one gets in.[web:17]

== Related Web3 terms ==

=== DAO ===

A '''DAO''' or '''decentralized autonomous organization''' is a community-run group that makes decisions through token-based or member voting rather than centralized leadership.[web:20] NFT projects sometimes use DAO structures to manage treasuries, community proposals, and collective ownership decisions.[web:20]

=== DeFi ===

'''DeFi''' stands for '''decentralized finance''', a group of blockchain-based financial tools and services that operate without traditional intermediaries.[web:16][web:20] Although DeFi and NFTs are distinct categories, the two overlap in lending, collateralization, and token-enabled financial experimentation.[web:16][web:20]

=== Decentralized network ===

A '''decentralized network''' is a system in which many computers share responsibility for processing or validating information rather than relying on one central operator.[web:16] This structure is one of the reasons blockchain records can be independently verified by participants across a network.[web:16]

=== Crypto art ===

'''Crypto art''' is digital art created, collected, or traded through blockchain systems, often using NFTs as proof of ownership.[web:16] It was one of the earliest and most visible use cases that brought NFTs into mainstream attention.[web:16][web:18]

== Risks and limitations ==

NFT ownership does not always mean ownership of copyright or broad intellectual-property rights in the associated media.[web:26] The exact rights depend on the project’s terms, license, and the legal structure attached to the token.[web:26]

NFT markets can also be volatile, illiquid, and highly speculative.[web:17][web:20] Prices may be affected by hype, community behavior, token scarcity, marketplace rules, network fees, and the general condition of the crypto market rather than by enduring utility alone.[web:17][web:20]

Security is another central issue. Users who lose control of a private key or approve malicious transactions can lose access to their NFTs permanently, which is why wallet safety and transaction review are treated as core skills in the space.[web:16]

== See also ==

* [[Blockchain]]
* [[Cryptocurrency]]
* [[Smart contract]]
* [[Digital art]]
* [[Glossary]]
* [[Decentralized finance]]

== References ==

<references />
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