According to the current nomenclature, a coin is a cryptocurrency that is currently running on its own blockchain, for example NEO, ETH and BTC are all coins because they run on their own network. A token is something that piggybacks on another negwork, e.g. ERC-20 or ERC-223 tokens, these are not full fledged cryptocurrencies, but many plan to make the jump to a proprietary network at some point.