fixture vs light bulb

fixture

noun
  • A lighting unit; a luminaire. 

  • A work-holding or support device used in the manufacturing industry. 

  • A scheduled match. 

  • A regular patron of a place or institution; a person constantly present at a certain place. 

  • Something that is fixed in place, especially a permanent appliance or other item of personal property that is considered part of a house and is sold with it; compare fitting, furnishing. 

  • A state that can be recreated, used as a baseline for running software tests. 

verb
  • To furnish with, as, or in a fixture. 

  • To schedule (a match). 

light bulb

noun
  • An article that resembles such a bulb and converts electricity to light by any process. 

  • An evacuated glass bulb containing a metal filament which is heated by electrical resistance to produce light. 

  • Used in reference to the sudden arrival of a realization, an inspiration, an idea, or the like. 

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