dildo vs groundnut

dildo

noun
  • A columnar cactus of the West Indies (Pilosocereus royenii). 

  • An artificial phallus (penis) for sexual use. 

  • An idiot, a bore. 

  • Any device or implement. 

verb
  • To penetrate with a dildo or with another object as if it were a dildo. 

groundnut

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

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

  • 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. 

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