bedbug vs bumblebee

bedbug

noun
  • A small nocturnal insect (Cimex lectularius), of the family Cimicidae, that feeds on the blood of humans and other warm-blooded hosts. 

bumblebee

noun
  • Any of several species of large bee in the genus Bombus 

  • A mid yellow 

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