Prefix: Inter- and Intra

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Across
  1. 2. to throw a remark into a conversation between two or more people
  2. 7. existing or occurring within your own mind
  3. 8. between or among the nations of the world
Down
  1. 1. within a galaxy
  2. 2. to get in between two people when it is not your problem or issue
  3. 3. the break between parts of a play, opera, or concert
  4. 4. within the nose
  5. 5. within the eye
  6. 6. involving people playing among themselves