intermix vs synthesize

intermix

verb
  • To mix together; to intermingle or blend. 

noun
  • An intermixture; the product of mixing together 

synthesize

verb
  • To combine two or more things to produce a new product. 

  • To be combined producing a new, more complex product. 

  • To produce a substance by chemical synthesis. 

  • To be produced by chemical synthesis. 

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