Language wheeeeeeee!

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Across
  1. 4. when something can't be understood at all
  2. 6. a group of terms used for a particular subject
  3. 8. the main point or idea of something
  4. 10. the system of hand and body movements for deaf people to communicate
  5. 12. words that people think are unacceptable
Down
  1. 1. to understand one another and have similar ideas
  2. 2. a group of words that are used in a figurative way
  3. 3. the general meaning of what someone said
  4. 5. a phrase that is not original or interesting
  5. 7. informal language
  6. 9. to use rude or offensive words
  7. 10. a short and easily remembered phrase, especially used in advertising
  8. 11. words that are specific to a profession or industry and so are difficult for others to understand