lighting vs apparatus

lighting and apparatus both are nouns.

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

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

lighting: apparatus for supplying artificial light effects for the stage or a film
apparatus: equipment designed to serve a specific function

Other hypernyms of lighting include setup.

lighting (noun)	apparatus (noun)
the act of setting something on fire	equipment designed to serve a specific function
the craft of providing artificial light	(anatomy) a group of body parts that work together to perform a given function
apparatus for supplying artificial light effects for the stage or a film
having abundant light or illumination