photogravure vs printseller

photogravure

noun
  • A print so made. 

  • An intaglio process for printing photographic reproductions in newspapers and books. 

verb
  • To print by this process. 

printseller

noun
  • A person who sells prints. 

  • Synonym of printshop, a place that sells prints. 

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