bema vs iconostasis

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. 

iconostasis

noun
  • A wall of icons between the sanctuary and the nave in a church of eastern Christendom. 

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