This document lists 10 pairs of related words, with the first word of each pair being the noun form and the second being the verb form. The related words include poem/poetic, original/origin, critic/criticize, academic/academy, combine/combination, inspire/inspiration, direct/direction, history/historic, repeat/repetition, and depart/departure.

1. Unit 4, Lesson 2
Related Words I
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2. Poem / poetic

3. Original / origin

4. Critic / criticize

5. Academic / academy

6. Combine / combination

7. Inspire / inspiration

8. Direct / direction

9. History / historic

10. Repeat / repetition

11. Depart / departure