bromide vs xylograph

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. 

xylograph

noun
  • A print taken from such an engraving. 

  • An engraving in wood or woodcut, especially one used in printing predating the Western tradition (14th c.). 

verb
  • To make a print from an engraving in wood. 

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