CoinucationCoin
A coin is the native cryptocurrency of its own blockchain, used to pay transaction fees and reward the people securing the network.
In crypto, a coin is the built-in asset of a blockchain. Bitcoin is the coin of the Bitcoin network, ETH is the coin of Ethereum, and SOL is the coin of Solana. The coin is what you pay fees in, what miners or validators receive as rewards, and in proof-of-stake systems what you lock up to help secure the chain.
The distinction between coins and tokens matters in practice. A coin exists at the base layer and cannot be removed without changing the blockchain itself. A token is created by a smart contract on top of that layer and depends on it. Both can be bought and sold, but a coin usually has deeper liquidity and a clearer role in its network's economics.
Everyday language blurs the line, and people often say coin to mean any crypto asset. Exchanges and data sites such as CoinGecko list coins and tokens side by side, so check the network a given asset runs on if the difference matters for what you are doing.