fop vs foretop

fop

foretop

noun
  • A platform at the top of the foremast, supported by the trestle trees. 

  • The front seat at the top of a horse-drawn vehicle. 

  • The forelock of a horse. 

  • An erect tuft of hair. 

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