combustion vs lighting

combustion and lighting both are nouns.

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

As nouns, lighting is a hyponym of combustion; that is, lighting is a word with a more specific, narrower meaning than combustion:

Other hyponyms of combustion include arson, fire-raising, incendiarism, firing, ignition, inflammation, kindling, incineration.

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