Which words are being defined?

1. A substance that you use to clean your teeth. toothpaste
2. A piece of furniture for keeping clothes in. 
3. Someone who plays music on the radio or at discos. 
4. A card with your name, photograph and information to prove who you are. 
5. The first language you learn as a child. 
6. A game played on ice using sticks. 
7. A punctuation mark at the end of a sentence. 
8. A card you use to pay for things.