commixture vs intermixture

commixture

noun
  • The act or state of being mixed together; a union or mingling of constituents; commixtion. 

intermixture

noun
  • A mass formed by mixture; a mass of ingredients mixed. 

  • Admixture; an additional ingredient. 

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