groundnut vs nit

groundnut

noun
  • The nutlike tuber of such a plant, especially peanuts. 

  • A climbing vine, Apios americana, of eastern North America, having fragrant brownish flowers and small edible tubers. 

  • A plant which bears its nutlike seeds underground, such as a peanut (Arachis hypogaea) or a Bambara groundnut (Vigna subterranea). 

  • Any similar plant having underground tubers. 

nit

noun
  • The egg of a louse. 

  • A nitpicker. 

  • A candela per square metre. 

  • A head louse regardless of its age. 

  • A young louse. 

  • A fool, a nitwit. 

  • Synonym of nat (“logarithmic unit of information”) 

  • A player with an overly cautious and reactive playing style. 

  • A minor shortcoming. 

verb
  • To have the modus vivendi of a drug addict, to live the life of a nitty. 

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