convent vs musalla

convent

noun
  • A Christian school. 

  • A religious community whose members (especially nuns) live under strict observation of religious rules and self-imposed vows. 

  • A gathering of people lasting several days for the purpose of discussing or working on topics previously selected. 

  • A coming together; a meeting. 

  • The buildings and pertaining surroundings in which such a community lives. 

musalla

noun
  • A place for praying (e.g. outside a mosque); a praying room. 

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