evaporation vs vapor

evaporation

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

  • 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. 

vapor

noun
  • The gaseous state of a substance that is normally a solid or liquid. 

  • Cloudy diffused matter such as mist, steam or fumes suspended in the air. 

  • Something insubstantial, fleeting, or transitory; unreal fancy; vain imagination; idle talk; boasting. 

verb
  • To emit vapor or fumes. 

  • To give (someone) the vapors; to depress, to bore. 

  • To become vapor; to be emitted or circulated as vapor. 

  • To turn into vapor. 

  • To use insubstantial language; to boast or bluster. 

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