jowl vs mandible

jowl

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

  • cut of fish including the head and adjacent parts 

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

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

mandible

noun
  • The jaw or a jawbone, especially the lower jawbone in mammals and fishes. 

  • Any of various invertebrate mouthparts serving to hold or bite food materials. 

  • One of the anterior pair of mouthparts of an arthropod, designed for holding and cutting food. 

  • Either of the upper and lower segments of a bird's beak. 

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