explosion vs ebullition

explosion and ebullition both are nouns.

Word	Noun	Adjective	Verb	Adverb
explosion	Yes	No	No	No
ebullition	Yes	No	No	No

As nouns, ebullition is a hypernym of explosion; that is, ebullition is a word with a broader meaning than explosion:

Other hypernyms of explosion include blowup, effusion, gush, outburst.

explosion (noun)	ebullition (noun)
the act of exploding or bursting	an unrestrained expression of emotion
a golf shot from a bunker that typically moves sand as well as the golf ball
the terminal forced release of pressure built up during the occlusive phase of a stop consonant
a sudden outburst
a violent release of energy caused by a chemical or nuclear reaction
a sudden great increase
the noise caused by an explosion