concomitance vs conformity

concomitance

noun
  • occurrence or existence together or in connection with one another, coexistence 

  • A concomitant. 

  • The Roman Catholic doctrine of the existence of the entire body of Christ in the Eucharist, under each element, so that the body and blood are both received by communication in one kind only. 

conformity

noun
  • The state of things being similar or identical. 

  • A point of resemblance; a similarity. 

  • The state of being conforming, of complying with a set of rules, with a norm or standard. 

  • The ideology of adhering to one standard or social uniformity. 

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