What are the types of tokens

[Cryptodetails]

What for you crypto currency?
Crypto currency is the internal accounting unit of a public blockbuster. Unlike tokens, crypto currency should always have its own block, and should also be emitted decentralized.
Tokens secured by assets of the material world (Asset-backed tokens)
Tokens of this category certify the rights of their owners in relation to objects of the material world. Such objects can be real estate, precious metals, intellectual property.

[ladozhskiy1995]

theres a lot of token anyway to be introduce,but what is thier specific purpose in the crypto word