harvest mite vs phallus

harvest mite

noun
  • Any of various mites of the genus Trombicula that inhabit forests and grasslands and which, in their larval stage, attach to various animals including humans and feed on skin, often causing itching. 

phallus

noun
  • A similar erectile sexual organ present in the cloacas of male ratites. 

  • A penis, especially when erect. 

  • A representation of an erect penis symbolising fertility or potency. 

  • The signifier of the desire of the Other, and the signifier of jouissance. 

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