Nouns ending in the suffix -ation

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Across
  1. 5. short form of a word or phrase
  2. 8. a sign that something exists, is true, or is likely to happen
  3. 9. the act of moving a football team to a lower division
  4. 10. the willingness to give a lot of time and energy to something because it is important
Down
  1. 1. the movement of fresh air around a closed space, or the system that does this
  2. 2. the act of creating something, or the thing that is created
  3. 3. continuous quick, slight shaking movement
  4. 4. the act of showing someone how to do something
  5. 6. the process of translating something, from one language to another
  6. 7. a form of energy that comes from a nuclear reaction and that can be very dangerous to health