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• adjective
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• cardboard city (noun)
  1. an area in a large town or city where people who have no home sleep outside using cardboard boxes to try to keep warm
• cardboard cut-out (noun)
  1. a picture drawn on cardboard so that it can stand up on a surface
  2. a person or character in a book, film etc who does not seem natural or real
• corrugated cardboard (noun)
  1. can be glued to flat cardboard on one or both sides cardboard with corrugations
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