bema vs sacellum

bema

noun
  • Raised area of worship in a synagogue upon which rests the Holy Ark containing Scrolls of Torah. 

  • A platform from which speakers addressed an assembly. 

sacellum

noun
  • A small chapel, as a monument within a church. 

  • In Ancient Rome, a shrine open to the sky, sometimes used for sacrificial purposes, or in honor of the divine. 

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