Tokens

A variant of cryptocurrencies on top of its blockchain.
Fungible token → have the same value and interchangeable with one another (ERC-20 assets on Ethereum, Bitcoin, ether, etc)
Non-fungible → represent something unique (ERC-721 tokens on ethereum)
- ERC-846 providing shared ownership of a token.
- ERC-721
- ERC-1155
Functions: Utility (outside financial speculation) and Security (financial)
Pull and Push transaction.

Non Fungible Token (NFT) (ERC-721, ERC-1155)

a smart contract containing non fungible token and functionality to live and interact within web 3 network

rarely interoperable
can be used as privilege and special ticket to access special service that valuability (preferably) grow better .

Erc 721 (1 Smart contract, 1 NFT Token)

ERC-721 is a standard for non fungible tokens. With fungible token like ERC-20, each token have the same exact same attributes. With non fungible tokens, each tokens can have different attributes and therefore is unique, which allows for digital scarcity.

ERC-721 Non-Fungible Token Standard | ethereum.org

ERC721 NFT Token Standard Explained

ERC-721

How to create an NFT Smart Contract (ERC721)

ERC721 - OpenZeppelin Docs

ERC-1155 (1 Smart Contract, Multiple NFT Token)

ERC 1155 is the standard for virtual goods in games. An ideal standard because have mixture of ERC-20 and ERC-721

ERC-20 (fungible) so that we can attach a price to the virtual good, and users can then purchase and trade the item.
ERC-721(non-fungible) so that the virtual good can have unique properties. E.g how many rockets in a gun item that it can hold.
It has the ability to transfer multiple tokens in one transactions.
Includes the concept of an operator, an address that has the authority to move tokens on user behalf. A concept that is an improvement of the Pull of ERC-20, instead of having to authorize operator everytime, user only need to do it once.

ERC1155 NFT Token Standard - Explained

Multisignature Contracts

A contract that needs to be authorized by multiple users.