Topic - One Word Substitution [#Q24/V/OWS/190725]
1. A place where birds are kept
2. The act of killing one's father
3. A government by a king or queen
4. A person who draws maps
5. A person who looks on the bright side of things
6. A person who introduces new ideas or methods
7. A speech made without prior preparation
8. One who believes that God is in everything
9. One who studies the stars and planets
10. A person who writes plays
11. A person who sells medicines
12. The study of skin and its diseases
13. One who walks in sleep
14. An unmarried woman
15. Something that cannot be avoided
16. A person who can endure pain without showing it
17. A name assumed by an author
18. The science of coins and medals
19. One who composes music
20. The place where historical documents are stored