fluorescent vs headlight

fluorescent

noun
  • A fluorescent light. 

adj
  • Glowing as if with fluorescence; vivid 

  • Of or relating to fluorescence. 

  • Emitting visible light as a result of the excitation of phosphors by ultraviolet photons produced by the passage of an electrical current through an inert gas infused with mercury. 

  • Exhibiting or produced by fluorescence. 

headlight

noun
  • A bright light, with a lens and reflector, on the front of a motor vehicle (or originally a ship or train), designed to illuminate the road when driving at night; normally one of a pair. 

  • A woman's breast. 

  • A jewel; especially a diamond. 

  • Lysergic acid diethylamide (LSD). 

  • A woman's erect nipples, partially masked by clothing. 

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