decern vs mix up

decern

verb
  • transferred sense 

  • Decree a person etc. to be or to do something by judicial sentence.  (in the phrase “to decern in”, obsolete) To mulct in by decree of court. 

  • Decree by judicial sentence that something be done. 

  • intransitive 

  • with simple object 

  • See distinctly (with the eyes or the mind); distinguish (an object or fact); discern. 

mix up

noun
  • A mix, blend, or variety. 

  • A confusion or reversal. 

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. 

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