finicky vs fussy

finicky and fussy both are adjectives.

Word	Noun	Adjective	Verb	Adverb
finicky	No	Yes	No	No
fussy	No	Yes	No	No

As adjectives, finicky and fussy are synonyms defined as:

Other synonyms of finicky include finical, particular, picky.

finicky (adjective)	fussy (adjective)
exacting especially about details	overcrowded or cluttered with detail
	annoyed and irritable
	exacting especially about details