foliole vs stylet

foliole

noun
  • One of the distinct parts of a compound leaf; a leaflet. 

stylet

noun
  • A style of a plant's flower. 

  • A slender medical probe or device. 

  • A stiff, slender organ of an animal. 

  • An engraving tool, a stylus. 

  • A poniard or stiletto. 

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