chinstrap vs jowl

chinstrap

noun
  • A form of beard that follows the jawline but does not cover the rest of the chin. 

  • A strip of leather or material used to fasten a hat or helmet under the chin. 

  • A band of colour below a bird's mouth, resembling the chinstrap of a helmet. 

jowl

noun
  • a fold of fatty flesh under the chin, around the cheeks, or lower jaw (as a dewlap, wattle, crop, or double chin). 

  • cut of fish including the head and adjacent parts 

  • the jaw, jawbone; especially one of the lateral parts of the mandible. 

  • the cheek; especially the cheek meat of a hog. 

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