ruckus vs fuss

ruckus and fuss both are nouns.

Word	Noun	Adjective	Verb	Adverb
ruckus	Yes	No	No	No
fuss	Yes	No	Yes	No

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

Other hyponyms of ruckus include ado, bustle, flurry, hustle, stir.

ruckus (noun)	fuss (noun)
the act of making a noisy disturbance	a rapid active commotion
	a quarrel about petty points
	an angry disturbance
	an excited state of agitation

ruckus (verb)	fuss (verb)
	worry unnecessarily or excessively
	care for like a mother