cockroach vs stinkbug

cockroach

noun
  • A black or brown straight-winged insect of the order Blattodea. 

  • A Tutsi. 

  • A person from New South Wales. 

  • A person or a member of a group of people regarded as undesirable and rapidly procreating. 

stinkbug

noun
  • Any of various insects of the Hemiptera order (the "true bugs"), in the Heteroptera suborder, principally in the superfamilies Pentatomoidea and Coreoidea. 

  • Any of several insects, usually shield-shaped, possessing a gland that produces a foul-smelling liquid, usually containing aldehydes which they use to discourage predators. 

  • A pinacate beetle or stink beetle (genus Eleodes) that releases a pungent odor when threatened. 

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