coda vs culmination

coda

noun
  • A conclusion (of a statement or event, for example), final portion, tail end. 

  • The optional final part of a syllable, placed after its nucleus, and usually composed of one or more consonants. 

  • In seismograms, the gradual return to baseline after a seismic event. The length of the coda can be used to estimate event magnitude, and the shape sometimes reveals details of subsurface structures. 

  • A passage that brings a movement or piece to a conclusion through prolongation. 

culmination

noun
  • Endpoint (usually good) arrived at after some series of actions or events, or some period , usually after the series or period has ended. The sum of something. 

  • The attainment of the highest point of altitude reached by a heavenly body; passage across the meridian; transit. 

  • A ceremony marking the completion of studies at an elementary school, middle school or junior high school, the term "graduation" being reserved for high school. 

  • Attainment or arrival at the highest pitch of glory, power, etc. 

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