Tokens in Ethereum represent a financial value or exist as a digital asset. These tokens can be either fungible or non-fungible, based on the requirement. They can represent anything ranging from a currency to a virtual cat that can be traded. Using an Ethereum-based token allows you to make use of Ethereum's existing infrastructure rather than building a blockchain from scratch.
A fungible token is one that is not unique and is perfectly interchangeable with other identical tokens. For example, the US dollar can be compared with fungible tokens. It is perfectly exchangeable with any other US dollar. Non-Fungible Tokens (NFTs) are unique in nature and can be distinguished from one another. For example, a collectible card can be considered as an NFT, and each card has different characteristics that make it stand out.
The Ethereum community has some standards defined...