cannon cracker vs banger

cannon cracker and banger both are nouns.

Word	Noun	Adjective	Verb	Adverb
cannon cracker	Yes	No	No	No
banger	Yes	No	No	No

As nouns, banger is a hypernym of cannon cracker; that is, banger is a word with a broader meaning than cannon cracker:

cannon cracker: a large firecracker
banger: firework consisting of a small explosive charge and fuse in a heavy paper casing

Other hypernyms of cannon cracker include cracker, firecracker.

cannon cracker (noun)	banger (noun)
a large firecracker	firework consisting of a small explosive charge and fuse in a heavy paper casing
	(British informal) pork sausage