cowlick vs lovelock

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. 

lovelock

noun
  • A flowing lock of hair that is dressed apart from the hair that remains. 

  • A lock of hair that hangs down and is worn apart from the hair that remains. 

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