commixture vs pasteup

commixture

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

pasteup

noun
  • A sheet on which text, images, etc. are pasted in order to be copied and printed, such as for an advertisement. 

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