1. Product - production
2. Attract - attraction, attractive
3. Friend - friendly
4. Develop - development, developing
5. Compare - comparison, comparable
6. Consume - consumer, consuming
7. Transport - transporter
8. Differ - different
9. Depend - depending
10. Employ - employer, employee
11. Require - requiring
12. Heat - heating, heated
13. Store - stored, storage