dentate vs sawtooth

dentate

adj
  • Having teeth or toothlike projections; serrated, toothed. 

sawtooth

noun
  • A cutting bit of a saw. 

  • A sawtooth wave. 

  • Any of various pierid butterflies of the genus Prioneris. 

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