Collective Nouns

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Across
  1. 6. A group of ants
  2. 7. A group of keys
  3. 8. A group of lions
Down
  1. 1. A group of soldiers
  2. 2. A group of birds
  3. 3. A group of thieves
  4. 4. A group of flowers
  5. 5. A group of singers
  6. 7. A group of musicians