scruple vs fuss

scruple and fuss both are nouns.

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

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

Other hypernyms of scruple include fret, niggle.

scruple (noun)	fuss (noun)
an ethical or moral principle that inhibits action	a rapid active commotion
uneasiness about the fitness of an action (particularly for reasons of ethics, morals or propriety)	a quarrel about petty points
a unit of apothecary weight equal to 20 grains	an angry disturbance
	an excited state of agitation

scruple (verb)	fuss (verb)
have doubts about	worry unnecessarily or excessively
raise scruples	care for like a mother
hesitate on moral grounds