collective nouns

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Across
  1. 2. a group of flowers
  2. 4. a group of bees
  3. 6. a group of ants
  4. 7. a group of wolves
Down
  1. 1. a group of books
  2. 3. a group of cows
  3. 5. a group of birds
  4. 7. a group of lions