erupt vs light up

erupt and light up both are verbs.

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

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

Other hyponyms of erupt include blow out, catch.

erupt (verb)	light up (verb)
become active and spew forth lava and rocks	introduce light into
start abruptly	begin to smoke
erupt or intensify suddenly	become clear
become raw or open	start to burn with a bright flame
break out	ignite
appear on the skin
force out or release suddenly and often violently something pent up
start to burn or burst into flames