Fill me in!

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Across
  1. 2. An ________ of ants.
  2. 6. Concrete nouns which can be quantified (hint: they can be counted).
  3. 8. A ________ of crows.
  4. 9. A ________ of lions.
  5. 10. A ________ of owls
  6. 12. A ________ of penguins.
  7. 13. Nouns which name a group of things.
Down
  1. 1. Nouns like 'ocean', 'homework', 'gold', etc.
  2. 2. Nouns which are thoughts, ideas, concepts or feelings.
  3. 3. A ________ of kittens.
  4. 4. Nouns which name all physical things which can be experienced via the five senses.
  5. 5. A ________ of elephants
  6. 7. Nouns which always start with a capital letter.
  7. 11. A ________ of searchers.