I sure that you have saw it -
Token and
CoinI know Crypto have two kind of: Bitcoin and Altcoin
Please tell me what is different between and Token and Coin

maybe the simple quote to answer your questions is
a coin run in their own blockchain, but a token is didn't run in their own blockchain
most of token created on ethereum blockchain now,, few in waves and others network such as eos, neo, strat etc