bicuspid vs eyetooth

bicuspid

noun
  • A tooth with two cusps; a premolar tooth. 

adj
  • Having two points or prominences; ending in two points; said of teeth, leaves, fruit, etc. 

eyetooth

noun
  • A canine tooth of the upper jaw in humans. 

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