crack up vs razz

crack up

verb
  • To cause to laugh heartily. 

  • To become insane; to suffer a mental breakdown. 

  • To crash an aircraft or automobile. 

  • To laugh heartily. 

  • To cry up; to extol. 

adj
  • Funny; hilarious 

razz

verb
  • To tease playfully; to heckle. 

  • To heckle by blowing a raspberry. 

  • To drive an automobile around. 

noun
  • A version of seven card stud where the worst poker hand wins (called lowball). 

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