climb vs escalation

climb

noun
  • The act of getting to somewhere more elevated. 

  • An upwards struggle 

  • An act of climbing. 

verb
  • To mount; to move upwards on. 

  • To move to a higher position on the social ladder. 

  • to jump high 

  • Of plants, to grow upwards by clinging to something. 

  • To move (especially up and down something) by gripping with the hands and using the feet. 

  • to practise the sport of climbing 

  • To scale; to get to the top of something. 

  • To ascend; rise; to go up. 

escalation

noun
  • an increase or rise, especially one to counteract a perceived discrepancy 

  • a deliberate or premeditated increase in the violence or geographic scope of a conflict 

  • The reassignment of a difficult customer problem to someone whose job is dedicated to handling such cases. 

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