apse vs pantheon

apse

noun
  • A semicircular projection from a building, especially the rounded east end of a church that contains the altar. 

  • The bishop's seat or throne in ancient churches. 

  • A reliquary, or case in which the relics of saints were kept. 

pantheon

noun
  • A temple dedicated to all the gods. 

  • All the gods of a particular people or religion, particularly the ancient Greek gods residing on Olympus, considered as a group. 

  • A category or classification denoting the most honored persons of a group. 

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