building vs drafting

building

noun
  • The act or process by which something is built; construction. 

  • A closed structure with walls and a roof. 

drafting

noun
  • The act or process of producing a technical drawing, or draft. 

  • A method of preparing fibers for weaving. 

  • The practice among ground vehicle drivers or cyclists of following in a close line to reduce wind resistance. 

  • A profession, usually related to making technical drawings for architecture, engineering, or manufacturing. 

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