1. I have a wallet on blockchain.info, i think it is the wallet called "online wallet"?
2. I have installed "bitcoin-qt" software, i think it is the wallet called "offline wallet"?
3. Can i send BTC from my blockchain.info wallet to my "bitcoin-qt"?
4. Does 1 wallet can have multiple addresses? (on bitcoin wallet software i can create some addresses).
5. which one is the safest way to store BTC : blockchain.info / my bitcoin software?

Thank you.