pinafore vs waistcoat

pinafore

noun
  • A sleeveless dress, often similar to an apron, generally worn over other clothes, and most often worn by young girls as an overdress. 

waistcoat

noun
  • An ornamental garment worn under a doublet. 

  • A sleeveless, collarless garment worn over a shirt and under a suit jacket. 

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