mix vs separate

mix

verb
  • To form by mingling; to produce by the stirring together of ingredients; to concoct from different parts. 

  • To unite with in company; to join; to associate. 

  • To stir together. 

  • To blend by the use of a mixer (machine). 

  • To combine (several tracks). 

  • To combine (items from two or more sources normally kept separate). 

  • To produce a finished version of (a recording). 

noun
  • The result of mixing two or more substances; a mixture. 

  • The result of combining items normally kept separate. 

  • The result of mixing several tracks. 

  • The finished version of a recording. 

  • A substance used to dilute or adulterate an illicit drug. 

separate

verb
  • To divide itself into separate pieces or substances. 

  • To disunite from a group or mass; to disconnect. 

  • To divide (a thing) into separate parts. 

  • To cause (things or people) to be separate. 

adj
  • Apart from (the rest); not connected to or attached to (anything else). 

  • Not together (with); not united (to). 

noun
  • A printing of an article from a periodical as its own distinct publication and distributed independently, often with different page numbers. 

  • Anything that is sold by itself, especially articles of clothing such as blouses, skirts, jackets, and pants. 

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