concomitance vs disconnection

concomitance

noun
  • A concomitant. 

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

  • 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. 

disconnection

noun
  • Absence of rapport; the nonexistence of, or a breakdown of, effective communication. 

  • Severance of a physical connection. 

  • Unexpected termination of a telephone connection. 

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