backyard vs cloister

backyard

noun
  • An area nearby to a country or other jurisdiction's legal boundaries, particularly an area in which the country feels it has an interest. 

  • A person's neighborhood, or an area nearby to a person's usual residence or place of work and where the person is likely to go. 

  • A yard to the rear of a house or similar residence. 

cloister

noun
  • A place, especially a monastery or convent, devoted to religious seclusion. 

  • such an arcade in a monastery; 

  • The monastic life. 

  • such an arcade fitted with representations of the stages of Christ's Passion. 

verb
  • To confine in a cloister, voluntarily or not. 

  • To become a Roman Catholic religious. 

  • To deliberately withdraw from worldly things. 

  • To provide with a cloister or cloisters. 

  • To protect or isolate. 

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