bee vs fruit fly

bee

noun
  • A flying insect, of the clade Anthophila within the hymenopteran superfamily Apoidea, known for its organised societies (though only a minority have them), for collecting pollen and (in some species) producing wax and honey. 

  • A contest, especially for spelling; see spelling bee. 

  • The name of the Latin-script letter B. 

  • Any of the pieces of hard wood bolted to the sides of the bowsprit, to reeve the fore-topmast stays through. 

  • A community gathering to share labour, e.g. a sewing bee or a quilting bee. 

fruit fly

noun
  • any insect of the Drosophilidae family, whose larvae feed on ripening fruit, especially the species Drosophila melanogaster that is used in genetic research. 

  • A woman who enjoys the company of homosexual men; a "fag hag". 

  • any insect of the Tephritidae family, whose larvae damage plant tissue. 

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