printing house vs printing press

printing house

noun
  • An institution or commercial company chiefly devoted to printing. 

  • The building where printing occurs. 

  • Synonym of printshop: a place to make personal copies. 

printing press

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

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

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