Types of houses

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Across
  1. 7. A house on the tree
  2. 8. A large building with lots of apartments
  3. 9. Goes in a row
Down
  1. 1. On the water
  2. 2. A small cottage usually with one floor
  3. 3. Joint wall with another house
  4. 4. A place where a king lives
  5. 5. Is not joined to any other house
  6. 6. Small house