denture vs serration

denture

noun
  • a set of teeth, the teeth viewed as a unit 

  • an artificial replacement of one or more teeth 

  • a complete replacement of all teeth in a mouth 

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 denture and serration occurred in a corpus of books? (source: Google Ngram Viewer )