mix up vs specify

mix up

verb
  • To become involved with, especially socially or romantically. 

  • To confuse or reverse. 

  • To prepare something from ingredients that are mixed. 

  • To shuffle. 

  • To combine thoroughly. 

  • To mix or blend thoroughly and completely. 

noun
  • A mix, blend, or variety. 

  • A confusion or reversal. 

specify

verb
  • To state explicitly, or in detail, or as a condition. 

  • To bring about a specific result. 

  • To include in a specification. 

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