cenobium vs convent

cenobium

noun
  • A monastery, a monastic community. 

convent

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

  • A Christian school. 

  • 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. 

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