clash vs occur at the same time

clash

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. 

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

  • A skirmish, a hostile encounter. 

  • match; a game between two sides. 

  • An angry argument 

  • 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. 

occur at the same time

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