hassle vs fuss

hassle and fuss both are nouns.

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

As nouns, hassle and fuss are synonyms defined as:

Other synonyms of hassle include bother, trouble.

hassle (noun)	fuss (noun)
disorderly fighting	a rapid active commotion
an angry disturbance	a quarrel about petty points
	an angry disturbance
	an excited state of agitation

hassle (verb)	fuss (verb)
annoy continually or chronically	worry unnecessarily or excessively
	care for like a mother