airburst vs explosion

airburst and explosion both are nouns.

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

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

airburst: an explosion in the atmosphere
explosion: a violent release of energy caused by a chemical or nuclear reaction

Other hypernyms of airburst include blowup, detonation.

airburst (noun)	explosion (noun)
an explosion in the atmosphere	the act of exploding or bursting
	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