Coin

Have its own blockchain.
Works independently.
Have no specific function regarding the exchange.
It is your digital cash money through which you can buy things.
Example bitcoin and all other altcoins


Token

Not have their own blockchain.
Needs some platform to work .Like ERC-20 token works on ethereum blockchain.
Use For only specified function.
Not always use as a money, Except some case.
Tokens are just like your shares in project