fuss vs worry

fuss and worry both are nouns.

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

As verbs, worry is a hypernym of fuss; that is, worry is a word with a broader meaning than fuss:

fuss (noun)	worry (noun)
a rapid active commotion	something or someone that causes anxiety; a source of unhappiness
a quarrel about petty points	a strong feeling of anxiety
an angry disturbance
an excited state of agitation

fuss (verb)	worry (verb)
worry unnecessarily or excessively	lacerate by biting
care for like a mother	touch or rub constantly
	be worried, concerned, anxious, troubled, or uneasy
	disturb the peace of mind of; afflict with mental agitation or distress
	be concerned with
	be on the mind of