bromide vs photograph

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. 

photograph

noun
  • A picture created by projecting an image onto a photosensitive surface such as a chemically treated plate or film, CCD receptor, etc. 

verb
  • To appear in a photograph. 

  • To fix permanently in the memory etc. 

  • To take a photograph (of). 

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