industry vs roof

industry

noun
  • The sector of the economy consisting of large-scale enterprises. 

  • The tendency to work persistently. Diligence. 

  • Businesses that produce goods as opposed to services. 

  • Businesses of the same type, considered as a whole. Trade. 

  • Automated production of material goods. 

  • A typological classification of stone tools, associated with a technocomplex. 

roof

verb
  • To cover or furnish with a roof. 

  • To traverse buildings by walking or climbing across their roofs. 

  • To put into prison, to bird. 

  • To shelter as if under a roof. 

noun
  • The external covering at the top of a building. 

  • The top external level of a building. 

  • The upper part of a cavity. 

  • An overhanging rock wall. 

  • The surface or bed of rock immediately overlying a bed of coal or a flat vein. 

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