Another One of Sam's Crosswords :(

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Across
  1. 2. (_____)
  2. 4. any of a class of heavier-than-air craft that are lifted and sustained in the air horizontally by rotating wings or blades turning on vertical axes through power supplied by an engine.
  3. 5. gymnastic exercises designed to develop physical health and vigor, usually performed with little or no special apparatus.
  4. 8. elementary
  5. 10. a word having the same or nearly the same meaning as another in the language
Down
  1. 1. any disorder of the extremities or back, characterized by pain and stiffness.
  2. 3. to spend the winter in close quarters in a dormant condition, as bears and certain other animals.
  3. 6. an artificially induced trance state resembling sleep, characterized by heightened susceptibility to suggestion.
  4. 7. expressions of pleasure or joy
  5. 9. a building or room designed and equipped for indoor sports, exercise, or physical education.