As the title said, what is the difference between the bitcoin wallet and the bitcoin core, do i have to install both of them to work? Can I just have a bitcoin wallet?
Here's the simplest way to visualise it:
- the Blockchain is an accounting ledger showing daily spendings
- a wallet is like a keychain, holding the keys to unlock your BTC from the safe
- the key can be copied ie if you share your private key or the key is stolen then it can be used to open the lock (perhaps a 3D printer analogy where anyone can make use of your key would help)
- if you have the keys for an address holding Bitcoin AND the Blockchain shows BTC at that address, then you can spend the ฿ as long as someone else hasn't used the same key to unlock it before you
As stated in comments, the blockchain is a public record of all bitcoin transactions. If a wallet is like a bank account, the blockchain is the currency system.
For a new or casual user, it might be easiest to use a remote web-based wallet, rather then one on your own device. In that case, you don't really need to worry about interacting with the blockchain. For more information on remote wallets you can use, go here https://bitcoin.org/en/choose-your-wallet Click the "web" icon and you will see seven options to consider.