1. Health – healthy
2. Pain – painful
3. Danger – dangerous
4. Difference – different
5. Happiness – happy
6. Help – helpful, helpless
7. Response – responsible
8. Care – careful, careless
9. Harm – harmful
10. Employment – employ
11. Decision – decide
12. Treatment – treat
13. Resistance – resist
14. Visitation – visit
15. Ownership – own
16. Translation – translate
17. Discussion – discuss
18. Reaction – react
19. Smoking – smoke
20. Existence – exist