cowlick vs plumage

cowlick

noun
  • An unruly lock or section of hair that sticks straight out from the skull or lies at an angle at odds with the rest of an individual's hair, like a whorl or vortex. 

plumage

noun
  • Layer or collection of feathers covering a bird’s body; feathers used ornamentally; feathering. 

  • Finery or elaborate dress. 

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