ignite vs light up

ignite and light up both are verbs.

Word	Noun	Adjective	Verb	Adverb
ignite	No	No	Yes	No
light up	No	No	Yes	No

As verbs, light up is a hyponym of ignite; that is, light up is a word with a more specific, narrower meaning than ignite:

Other hyponyms of ignite include fire up, light, reignite, conflagrate, enkindle, inflame, kindle, flare up.

As verbs, light up is a hyponym of ignite; that is, light up is a word with a more specific, narrower meaning than ignite:

Other hyponyms of ignite include blow out, catch.

ignite (verb)	light up (verb)
start or maintain a fire in	introduce light into
arouse or excite feelings and passions	begin to smoke
cause to start burning; subject to fire or great heat	become clear
start to burn or burst into flames	start to burn with a bright flame
	ignite