cover-up vs garment

cover-up

noun
  • An item of clothing to be worn over a swimsuit while not in the water. 

  • An attempt to conceal or disguise something, especially a wrongdoing or a mistake. 

garment

noun
  • A single item of clothing. 

  • The visible exterior in which a thing is invested or embodied. 

verb
  • To clothe in a garment. 

How often have the words cover-up and garment occurred in a corpus of books? (source: Google Ngram Viewer )