firecracker vs whizbang

firecracker and whizbang both are nouns.

Word	Noun	Adjective	Verb	Adverb
firecracker	Yes	No	No	No
whizbang	Yes	No	No	No

As nouns, whizbang is a hyponym of firecracker; that is, whizbang is a word with a more specific, narrower meaning than firecracker:

firecracker: firework consisting of a small explosive charge and fuse in a heavy paper casing
whizbang: a firecracker that (like the whizbang shell) makes a whizzing sound followed by a loud explosion

Other hyponyms of firecracker include cannon cracker, cherry bomb, whizzbang.

firecracker (noun)	whizbang (noun)
firework consisting of a small explosive charge and fuse in a heavy paper casing	a firecracker that (like the whizbang shell) makes a whizzing sound followed by a loud explosion
	a small high-velocity shell; it makes a whizzing sound followed by a bang when it hits