laboratory vs shop floor

laboratory

noun
  • A room, building or institution equipped for scientific research, experimentation or analysis. 

  • A place where chemicals, drugs or microbes are prepared or manufactured. 

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 laboratory and shop floor occurred in a corpus of books? (source: Google Ngram Viewer )