Tier 2 words

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Across
  1. 5. The middle or inside
  2. 7. An conjunction to despite the fact
  3. 8. To hide or be out of sight
Down
  1. 1. A row or set of keys
  2. 2. An experience of pain
  3. 3. To rehearse
  4. 4. Problem between two sides
  5. 6. A substance