edentate vs teethless

edentate

adj
  • Lacking teeth. 

  • Belonging to the Edentata. 

noun
  • Any mammal that has few or no teeth, but especially the anteaters, armadillos, and sloths of the former order Edentata. 

teethless

adj
  • Synonym of toothless (“without teeth”) 

  • Synonym of toothless (“weak”) 

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