erupt vs break open

erupt and break open both are verbs.

Word	Noun	Adjective	Verb	Adverb
erupt	No	No	Yes	No
break open	No	No	Yes	No

As verbs, erupt and break open are synonyms defined as:

Other synonyms of erupt include burst out, flare, flare up, irrupt.

erupt (verb)	break open (verb)
become active and spew forth lava and rocks	erupt or intensify suddenly
start abruptly	come open suddenly and violently, as if from internal pressure
erupt or intensify suddenly	open with force
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