bring down vs key up

bring down

verb
  • To cause an opponent to fall after a tackle. 

  • To cause to fall down, e.g. in an accident. 

  • To reduce. 

  • To make something, especially something flying, fall to the ground, usually by firing a weapon of some kind. 

  • To make someone feel bad emotionally. 

  • To make a ruler lose their position of power. 

  • To humble. 

key up

verb
  • To raise the pitch of. 

  • To produce nervous tension in. 

  • To raise the intensity, excitement, tension, etc., of. 

  • To raise (the whole ring of an arch) off its centering, by driving in the keystone forcibly. 

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