Words That Are Both Singular and Plural I

1. Aircraft

2. Alms

3. Barracks

4. Binoculars

5. Bison

6. Caries (cavities)

7. Cattle

8. Chalk

9. Chassis

10. Cod

11. Corps

12. Crossroads

13. Deer

14. Elk

15. Gallows

16. Glasses (eyeglasses)

17. Goldfish

18. Grapefruit

19. Halibut

20. Headquarters