patio vs quadrangle

patio

noun
  • A paved outside area, adjoining a house, used for dining or recreation. 

  • An inner courtyard typical of traditional houses in some regions of Spain. 

quadrangle

noun
  • A courtyard which is quadrangular. 

  • The buildings forming the border of such a courtyard. 

  • A geometric shape with four angles and four straight sides; a four-sided polygon. 

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