hubbub vs katzenjammer

hubbub and katzenjammer both are nouns.

Word	Noun	Adjective	Verb	Adverb
hubbub	Yes	No	No	No
katzenjammer	Yes	No	No	No

As nouns, hubbub and katzenjammer are synonyms defined as:

Other synonyms of hubbub include brouhaha, uproar.

hubbub (noun)	katzenjammer (noun)
loud confused noise from many sources	loud confused noise from many sources
	disagreeable aftereffects from the use of drugs (especially alcohol)