'Ch' sound that makes 'K'

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Across
  1. 3. an educating place to learn
  2. 6. someone who is trained to release tense muscles
  3. 7. beliefs related to Jesus
  4. 9. a harmony of singers
  5. 10. is a seasonal holiday which celebrates the birth of Jesus
Down
  1. 1. a main section of lyrics in a song
  2. 2. gas used in swimming pools
  3. 4. a type of flower
  4. 5. someone who designs houses
  5. 8. Chemistry substance