lighting fixture vs fixture

lighting fixture and fixture both are nouns.

Word	Noun	Adjective	Verb	Adverb
lighting fixture	Yes	No	No	No
fixture	Yes	No	No	No

As nouns, fixture is a hypernym of lighting fixture; that is, fixture is a word with a broader meaning than lighting fixture:

lighting fixture (noun)	fixture (noun)
a fixture providing artificial light	the act of putting something in working order again
	an object firmly fixed in place (especially in a household)
	the quality of being fixed in place as by some firm attachment
	a regular patron