What is Wallet?

Software or hardware that holds keys and signs transactions; it does not hold coins.

A wallet manages keys and addresses. The coins live on the chain; the wallet is the thing that proves you can move them.

That distinction matters when a service says it stores your coins: if it holds the keys, it holds the coins.

Custodial walletWallets
A wallet where a company holds the keys and you hold an account with the company.
Non-custodial walletWallets
A wallet where you hold the keys and nobody can freeze or recover your funds.
Private keySecurity
The secret that proves ownership of a wallet; anyone holding it controls the funds.

See it on a coin page