factory vs shop floor

factory

noun
  • A building or other place where manufacturing takes place. 

  • A factory farm. 

  • In a computer program or library, a function, method, etc. which creates an object. 

  • A trading establishment, especially set up by merchants working in a foreign country. 

  • A device or process that produces or manufactures something. 

  • A police station. 

adj
  • Having come from the factory in the state it is currently in; original, stock. 

shop floor

noun
  • The work area of a workshop, separate from the offices and other rooms. 

  • The public area of a retail shop, as distinct from the offices and other rooms. 

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