gnathite vs maxillary

gnathite

noun
  • Any of the mouth appendages of the Arthropoda. 

maxillary

noun
  • A tooth growing from the upper jawbone. 

adj
  • Of or relating to the jaw or jawbone. 

  • Of or pertaining to the maxillae of an arthropod. 

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