Word formation: nouns

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Across
  1. 1. behaviour that annoys or upset someone
  2. 3. the process of making something or someone better
  3. 4. the way that someone or something looks
  4. 7. the action or process of identifying something
  5. 8. action or process of examining crimes,problems, etc.
  6. 9. an extra part or extension
Down
  1. 2. the manner that someone behaves to deal with sb/sth
  2. 4. the action of helping someone
  3. 5. the feeling of intense irritation or annoyance
  4. 6. knowing someone or something due to being seen/heard