incongruity vs multeity

incongruity

noun
  • The state of being incongruous, or lacking congruence. 

  • A thing that is incongruous. 

  • An instance or point of disagreement 

multeity

noun
  • manifoldness; multiplicity; the quality of being many. 

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