bema vs retable

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. 

retable

noun
  • A table or shelf behind an altar, on which are placed images or holy objects. 

verb
  • To table again. 

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