groundnut vs tonto

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. 

tonto

noun
  • a traditional Ugandan fermented beverage made from bananas 

  • Synonym of idiot: someone who is foolish or stupid. 

adj
  • Synonym of crazy. 

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