Can you keep coins on Uniswap?

Excuse me, I'm a bit confused about the functionality of Uniswap. Could you clarify whether it's possible to actually store or keep coins directly on the platform? As I understand, Uniswap is primarily a decentralized exchange for swapping tokens, but I'm not entirely sure if it's meant for holding cryptocurrencies in the traditional sense. Is there a wallet functionality or some other means of securely keeping my assets on Uniswap, or do I need to use an external wallet for that purpose? Thank you for your assistance in clarifying this matter.