20 examples of compound noun

Examples of compound nouns:

1. arrowroot
2. bathtub
3. can opener
4. downtown
5. egg beater
6. fifty-five
7. gas pump
8. houseboat
9. ice-cream
10. jump rope
11. keepsake
12. lunch box
13. meatballs
14. notebook
15. open house
16. popcorn
17. quarter-horse
18. rowboat
19. stop sign
20. thumbtacks