Join, meet, link

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Across
  1. 4. the area where 2 bones meet. used to move
  2. 5. to put together
  3. 6. giving different forms of verbs
  4. 7. not together
  5. 9. to put back together
Down
  1. 1. a word used to put together sentences
  2. 2. joined together
  3. 3. where 2 railways meet
  4. 8. veins connecting the head and heart