fretsaw vs jigsaw

fretsaw

noun
  • A saw consisting of a metal frame having a fine-toothed narrow blade held under tension, used in making curved cuts. 

verb
  • To cut with a fretsaw. 

jigsaw

noun
  • A power saw with fine teeth and a narrow blade which can cut curves in wood or metal. 

  • Something that can be compared to a jigsaw puzzle. 

  • A jigsaw puzzle. 

verb
  • To cut something using a jigsaw. 

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