Spiritual vs convent

Spiritual

noun
  • A member of a branch of the Franciscan order that advocated simple dress and renounced the owning of property. 

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. 

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