mixed vs twinfold

mixed

adj
  • Having two or more separate aspects. 

  • Including both male(s) and female(s). 

  • Not completely pure, tainted or adulterated. 

  • Stemming from two or more races or breeds 

twinfold

adj
  • Synonym of twofold 

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