Greek and latin root words

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Across
  1. 3. A word that has the same meaning as another word
  2. 4. A place for meeting together for worship and religious instruction in the Jewish Faith
  3. 5. Parts put together to make a whole
  4. 6. A relationship that exists between two different organisms that depen on each other
  5. 8. Feeling kindness together with someone who suffers
  6. 9. The conditions that together tell a doctor what is wrong
Down
  1. 1. Formed together from artificial parts
  2. 2. A conference or a meeting to discuss a topic
  3. 6. Being the same on both sides
  4. 7. A group of business people working together