Crosswords Puzzle

Horizontal Words

1. The rate at which a person, company, or country does useful work (12)
3. Enthusiasm for doing something (10)
5. Come from or happen in the inner body (8)
7. Cause of stress (8)

Vertical Words

2. A temporary feeling that your sense of balance is not good and that you may fall (9)
4. A medical term of inadequately sleep; sleepless (9)
6. Come from or happen outside (8)