congruity vs convenience

congruity

noun
  • The quality of agreeing; the quality of being suitable and appropriate. 

  • An instance or point of agreement or correspondence; a resemblance. 

convenience

noun
  • The quality of being convenient. 

  • Any object that makes life more convenient; a helpful item. 

  • A convenient time. 

verb
  • To make convenient 

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