attendance vs nonappearance

attendance

noun
  • The act of attending; the state of being present; presence. 

  • The persons or number of persons present. 

  • The frequency with which one has been present for a regular activity or set of events. 

nonappearance

noun
  • A failure to appear, especially at a legal trial. 

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