Similar to a traditional wallet you may carry in your pocket, a Bitcoin Wallet is used to store money. The difference is that instead of storing a collection of bills and cards, a bitcoin wallet stores a collection of bitcoin private keys. Crypto-exchanges and -wallets generally do not provide enough insurance and security to be used to store money in the same way as a bank. Not surprisingly, as the value of a bitcoin has increased, so too has the number of viruses designed to steal bitcoin from wallets, as well as cyber attacks against exchanges. Examples of blockchain wallets include Electrum, Blockchain.info, Jaxx, Mycelium, Samurai, and Bitcoin paper wallet. There are many more based on the needs you have and the security you require.