noontime vs terce

noontime

noun
  • Approximately noon. 

  • Noon. 

  • The time at which something peaks in some way (e.g., in vitality, in influence, in reknown) (by analogy with the waxing of the sun each day). 

terce

noun
  • The third hour of daylight (about 9 am). 

  • The service appointed for this hour. 

  • A widow's right, where she has no conventional provision, to a liferent of a third of the husband's heritable property. 

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