! Crossword

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Across
  1. 5. Originates from this word
  2. 7. Math use (more common one)
  3. 8. Formal name
  4. 9. Interruptions
  5. 11. When nothing comes before or after it
  6. 13. Can be typed using this universal encoding standard
  7. 15. Swedish lyricist
  8. 16. Primarily used to show this
  9. 18. Starts clauses in some languages
Down
  1. 1. American English name
  2. 2. Noises
  3. 3. Exclaims
  4. 4. _____ move in chess
  5. 6. Programming use
  6. 10. First name of creator
  7. 12. Type of click it's used for
  8. 14. British computation contexts name
  9. 17. Other math use (more obscure one)