Random nonsense

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Across
  1. 2. cooking method, often used for fish or eggs
  2. 4. the United Nations Children’s Fund charity
  3. 8. island country off the east cost of Africa
  4. 9. A person who deliberately starts a fire
  5. 10. Type of engine, no gears to change
  6. 11. A piece of furniture or politicians in power
  7. 13. planet, or an element used in old thermometers
  8. 16. these nuts are the main ingredient of marzipan
Down
  1. 1. type of yacht with 2 hulls
  2. 3. 2x radius of a circle
  3. 5. singing competition and 2020 film
  4. 6. a device used to launch a projectile
  5. 7. Religious figure or the singer of Vogue
  6. 12. 1960s hairstyle or a home for insects?
  7. 14. Whispy clouds, Latin for "curl of hair"
  8. 15. the last english city alphabetically