ignition vs lighting

ignition and lighting both are nouns.

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

As nouns, ignition and lighting are synonyms defined as:

Other synonyms of ignition include firing, inflammation, kindling.

ignition (noun)	lighting (noun)
the act of setting something on fire	the act of setting something on fire
the mechanism that ignites the fuel in an internal-combustion engine	the craft of providing artificial light
the process of initiating combustion or catching fire	apparatus for supplying artificial light effects for the stage or a film
	having abundant light or illumination