gnat vs mite

gnat

noun
  • An annoying person. 

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

mite

noun
  • A small or naughty person, or one people take pity on; rascal. 

  • A lepton, a small coin used in Palestine in the time of Christ. 

  • Anything very small; a minute object; a very little quantity or particle. 

  • A small coin formerly circulated in England, rated at about a third of a farthing. 

  • A small weight; one twentieth of a grain. 

  • Any of many minute arachnids which, along with the ticks, comprise subclass Acarina (aka Acari). 

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