denticulation vs serration

denticulation

noun
  • The state of being set with small notches or teeth. 

  • A small tooth; a denticle. 

serration

noun
  • A set of teeth or notches. 

  • One of the teeth in a serrated or serrate edge. 

  • The state of being serrated. 

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