lighting vs combustion

lighting and combustion both are nouns.

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

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

Other hypernyms of lighting include burning.

lighting (noun)	combustion (noun)
the act of setting something on fire	the act of burning something
the craft of providing artificial light	a process in which a substance reacts with oxygen to give heat and light
apparatus for supplying artificial light effects for the stage or a film	a state of violent disturbance and excitement
having abundant light or illumination