dipteran vs gnat

dipteran

noun
  • An insect of the large order Diptera; a fly. 

adj
  • Relating to or denoting dipterans. 

gnat

noun
  • Any small insect of the order Diptera, specifically within the suborder Nematocera. 

  • An annoying person. 

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