synagogal vs synagogue

synagogal

adj
  • Of or pertaining to a synagogue. 

synagogue

noun
  • A congregation of Jews or Samaritans for the purpose of worship or religious study. 

  • A place of worship for Jews or Samaritans. 

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