A token is a store of value within a community or ecosystem. Much like monopoly money, or tokens you exchange fiat money for at a petrol-station to pump tyres or wash your car, or points you collect in a game or in supermarkets, or airlines to spend, redeem thus making savings within that ecosystem. Tokens are used within crypto ecosystems to store value which can be redeemed for cryptocurrencies within the ecosystems or exchanged or traded with other ecosystems or exchanges.