verbs to nouns, nouns to verbs

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Across
  1. 4. collector (noun)
  2. 7. guide (noun)
  3. 8. management (noun)
  4. 9. operation (verb)
  5. 10. contestant (verb)
  6. 11. ascend(noun)
Down
  1. 1. collector (verb)
  2. 2. descent (verb)
  3. 3. manage (noun)
  4. 5. launch (verb)
  5. 6. repeat (noun)