1.How do we call a person who collects thinngs? 2.What things can collect? 3.What themes of stamp collections do you know?

1)Collectioner2)Books, cars, labels, flowers, coins and etc.3)Special stamps, commemorative stamps and regular stamps

1. a collector 2. There is so many things which we can to collect, like stamps or books. 3. Thematic collections can be made around any topic you wish