bract vs stylet

bract

noun
  • A leaf or leaf-like structure from the axil out of which a stalk of a flower or an inflorescence arises. 

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 bract and stylet occurred in a corpus of books? (source: Google Ngram Viewer )