evacuation vs unwind

evacuation

noun
  • The act of emptying, clearing of the contents, or discharging, including creating a vacuum. 

  • Abolition; nullification. 

  • Voidance of any matter by the natural passages of the body or by an artificial opening; defecation; also, a diminution of the fluids of an animal body by cathartics, venesection, or other means. 

  • The act of evacuating; leaving a place in an orderly fashion, especially for safety. 

  • Withdrawal of troops or civils from a town, country, fortress, etc. 

  • That which is evacuated or discharged; especially, a discharge by stool or other natural means. 

unwind

noun
  • Any mechanism or operation that unwinds something. 

verb
  • To undo something. 

  • To relax; to chill out; to rest and become relieved of stress 

  • To close out a position, especially a complicated position. 

  • To be or become unwound; to be capable of being unwound or untwisted. 

  • To analyse (a call stack) so as to generate a stack trace etc. 

  • To separate (something that is wound up) 

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