clash vs concomitance

clash

noun
  • An angry argument 

  • A loud sound, like the crashing together of metal objects. 

  • A skirmish, a hostile encounter. 

  • match; a game between two sides. 

  • Opposition; contradiction; such as between differing or contending interests, views, purposes etc. 

  • Chatter; gossip; idle talk. 

  • A combination of garments that do not look good together, especially because of conflicting colours. 

  • An instance of restarting the game after a "dead ball", where it is dropped between two opposing players, who can fight for possession. 

verb
  • To coincide, to happen at the same time, thereby rendering it impossible to attend all. 

  • To argue angrily. 

  • To chatter or gossip. 

  • To come into violent conflict. 

  • To make a clashing sound. 

  • To fail to look good together; to contrast unattractively; to fail to harmonize. 

  • To face each other in an important game. 

  • To cause to make a clashing sound. 

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. 

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