Practice vocabulary: Simple nouns

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Across
  1. 3. A period of seven days
  2. 5. A very brief period of time
  3. 9. The governing body of a nation, state, or community
  4. 10. A collection of people or things
  5. 12. A reality or truth that exists
  6. 13. A set of principles or procedures according to which something is done
Down
  1. 1. An instance of a problem or situation
  2. 2. A cause, explanation, or justification for an action or event
  3. 4. A particular detail or aspect of something
  4. 6. A numerical value
  5. 7. A concept or mental impression
  6. 8. An organization that sells goods or services
  7. 11. Something that requires a solution