bellyscraper vs implement

bellyscraper

noun
  • A piece of earthmoving equipment used to level land and build roads. A heavy equipment machinery with a blade on the bottom and a hopper on top, that can carry, scrape-up, and lay-down material. 

implement

noun
  • A tool or instrument for working with. 

verb
  • To bring about; to put into practice; to carry out. 

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