erupt vs blow out

erupt and blow out both are verbs.

Word	Noun	Adjective	Verb	Adverb
erupt	No	No	Yes	No
blow out	No	No	Yes	No

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

Other hyponyms of erupt include catch, light up.

erupt (verb)	blow out (verb)
become active and spew forth lava and rocks	melt, break, or become otherwise unusable
start abruptly	put out, as of fires, flames, or lights
erupt or intensify suddenly	erupt in an uncontrolled manner
become raw or open
break out
appear on the skin
force out or release suddenly and often violently something pent up
start to burn or burst into flames