printing press vs printworker

printing press

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

  • A mechanical device used for printing text or images repeatedly. 

printworker

noun
  • Synonym of printmaker, a person who works making prints of works of art, (particularly) a relatively unskilled employee. 

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