evaporation vs retirement

evaporation

noun
  • The process in which all or a portion of liquid (in a container) is turned into vapour, in order to increase the concentration of solid matter in the mixture. 

  • The process of a liquid converting to the gaseous state. 

retirement

noun
  • An act of retiring; withdrawal. 

  • The state of being retired; seclusion. 

  • The state of having permanently left one's employment, now especially at reaching pensionable age; the portion of one's life after retiring from one's career. 

  • The act of leaving one's career or employment permanently. 

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