crenate vs dentigerous

crenate

adj
  • Having round or blunt teeth on its margin; scalloped. 

noun
  • Any salt or ester of crenic acid 

dentigerous

adj
  • Bearing teeth or tooth-like structures; of or pertaining to tissue from which teeth develop. 

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