sideburns vs vandyke

sideburns

noun
  • Facial hair reaching from the top of the head down the side of the face to the side of the chin. 

vandyke

noun
  • A style of facial hair which has both a mustache and goatee but with all cheek hair shaven. 

  • An edge with ornamental triangular points. 

  • A style of dress or collar similar to those in Anthony van Dyck's portrait paintings; a small round cape, the border ornamented with points and indentations. 

verb
  • To fit or furnish with a vandyke; to form with points or scallops like a vandyke. 

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