blat vs crack up

blat

verb
  • To cry, as a calf or sheep; bleat. 

  • To talk inconsiderately; blab. 

  • To utter loudly or foolishly; blurt. 

  • To produce an overrich or overblown sound on a brass instrument such as a trumpet, trombone, or tuba. 

  • To make a senseless noise. 

noun
  • The Soviet system of connections and social relationships; one's social or business network (in Russian or Soviet society). 

crack up

verb
  • To cry up; to extol. 

  • To cause to laugh heartily. 

  • To become insane; to suffer a mental breakdown. 

  • To crash an aircraft or automobile. 

  • To laugh heartily. 

adj
  • Funny; hilarious 

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