jasper vs knacker

jasper

noun
  • A person, a guy, especially seen as naïve or simple. 

  • Jasperware pottery. 

  • An opaque, impure variety of quartz, of red, yellow, and other dull colors, breaking conchoidally with a smooth surface. 

  • A wasp. 

verb
  • To decorate with, or as if with, jasper. 

knacker

noun
  • A person of lower social class; a chav, skanger or scobe. 

  • One who makes knickknacks, toys, etc. 

  • A member of the Travelling Community; a Gypsy. 

  • One who slaughters and (especially) renders worn-out livestock (especially horses) and sells their flesh, bones and hides. 

  • One who dismantles old ships, houses, etc. and sells their components. 

  • A harness maker. 

  • One of two or more pieces of bone or wood held loosely between the fingers, and struck together by moving the hand; a clapper. 

  • A testicle. 

  • An old, worn-out horse. 

verb
  • To reprimand. 

  • To tire out, exhaust. 

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