finale vs zenith

finale

noun
  • The chronological conclusion of a series of narrative works. 

  • The grand end of something, especially a show or piece of music. 

zenith

noun
  • The point in the sky vertically above a given position or observer; the point in the celestial sphere opposite the nadir. 

  • The highest point in the sky reached by a celestial body. 

  • Highest point or state; peak. 

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