-cian, -ssion, -sion, -tion

12345678910
Across
  1. 6. the opposite of multiplication
  2. 7. something an inventor makes
  3. 9. trains stop at these
  4. 10. when you can't stop thinking about something
Down
  1. 1. the opposite of subtraction
  2. 2. place where something is
  3. 3. someone who can perform magic
  4. 4. someone who makes music
  5. 5. an object I own
  6. 8. adding another room to a house