Across
- 2. Literary work
- 5. Our planet
- 7. Gaseous mixture in the atmosphere
- 8. Currency or wealth
- 10. Combustion phenomenon
- 11. Vast expanse beyond Earth's atmosphere
- 14. Earth's natural satellite
- 15. Precipitation from the sky
- 16. Woody plant
- 17. Center of our solar system
- 18. Man's best friend
- 20. Affectionate feeling
- 21. Musical composition
Down
- 1. Physical activity or game
- 3. Essential for life
- 4. Four-wheeled vehicle
- 6. Emotion of joy
- 8. Harmonious sounds
- 9. Nonrenewable resource
- 10. Nourishment for the body
- 12. Feline pet
- 13. Comrade or pal
- 17. Restful state of unconsciousness
- 19. Visual perception
- 20. Reaction to humor