photogravure vs printshop

photogravure

noun
  • A print so made. 

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

verb
  • To print by this process. 

printshop

noun
  • A shop that sells prints. 

  • A shop providing commercial copying and printing services. 

  • Synonym of printing house, an institutional or commercial mass publisher. 

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