bromide vs monoprint

bromide

noun
  • A print made on bromide paper. 

  • A binary compound of bromine and some other element or radical. 

  • A platitude. 

  • A dose of bromide taken as a sedative, or to reduce sexual appetite. 

  • A dull person with conventional thoughts. 

monoprint

noun
  • A form of printing on paper from a glass sheet to which oil paint has been applied; monotype. 

verb
  • To print using this technique. 

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