Forming nouns from verbs

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Across
  1. 1. way something looks/seems
  2. 3. the knowledge that somebody has about a particular subject or situation
  3. 5. what you do, say or think as a result of something that has happened
  4. 6. doing an activity or training regularly so that you can improve your skill
Down
  1. 2. he end of something such as a speech or a piece of writing
  2. 4. the ability to create pictures in your mind
  3. 7. something that is done to cure an illness or injury