garment vs slipover

garment

noun
  • A single item of clothing. 

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

verb
  • To clothe in a garment. 

slipover

noun
  • Any garment that is easy to put on, especially a dress or top. 

adj
  • slip-on 

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