bumblebee vs mosquito

bumblebee

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

  • A mid yellow 

mosquito

verb
  • To fly close to the ground, seemingly without a course. 

noun
  • A small flying insect of the family Culicidae, the females of which bite humans and animals and suck blood, leaving an itching bump on the skin, and sometimes carrying diseases like malaria and yellow fever. 

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