Beech vs airfoil

Beech

noun

  • An aircraft made by Beechcraft. 

name

  • A surname. 

  • A village in Hampshire, England. 

airfoil

noun

  • A wing of an aircraft. 

  • A structure shaped to produce lift when moving in air. 

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