carpentry vs workroom

carpentry

noun
  • A carpenter's workshop. 

  • A collection of timber connected by being framed together, as the pieces of a roof, floor, etc.; work done by a carpenter. 

  • The trade of cutting and joining timber in order to construct buildings or other structures; woodworking. 

workroom

noun
  • A room, such as a workshop or studio, where work is done. 

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