whizbang shell vs whizzbang

whizbang shell and whizzbang both are nouns.

Word	Noun	Adjective	Verb	Adverb
whizbang shell	Yes	No	No	No
whizzbang	Yes	No	No	No

As nouns, whizbang shell and whizzbang are synonyms defined as:

whizbang shell and whizzbang: a small high-velocity shell; it makes a whizzing sound followed by a bang when it hits

Other synonyms of whizbang shell include whizbang.

whizbang shell (noun)	whizzbang (noun)
a small high-velocity shell; it makes a whizzing sound followed by a bang when it hits	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