jaw vs premolar

jaw

noun
  • One of the bones, usually bearing teeth, which form the framework of the mouth. 

  • Anything resembling the jaw of an animal in form or action; especially plural, the mouth or way of entrance. 

  • Axle guard. 

  • The curved part of the cushion marking the entry to the pocket. 

  • The part of the face below the mouth. 

  • A notch or opening. 

  • One of a pair of opposing parts which are movable towards or from each other, for grasping or crushing anything between them. 

  • A notched or forked part, adapted for holding an object in place. 

  • The inner end of a boom or gaff, hollowed in a half circle so as to move freely on a mast. 

verb
  • To talk; to converse. 

  • To scold; to clamor. 

  • To assail or abuse by scolding. 

  • (of a ball) To stick in the jaws of a pocket. 

premolar

noun
  • A tooth situated in front of the molar teeth; especially a tooth in humans with two cusps which is between the canines and the molars (Latin: singular dens premolaris, plural dentes premolares) 

adj
  • Before a molar tooth, either in physical position or in its time of development; deciduous. 

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