furious vs fierce

furious and fierce both are adjectives.

Word	Noun	Adjective	Verb	Adverb
furious	No	Yes	No	No
fierce	No	Yes	No	No

As adjectives, furious and fierce are synonyms defined as:

Other synonyms of furious include ferocious, savage.

furious (adjective)	fierce (adjective)
marked by extreme anger	marked by extreme intensity of emotions or convictions; inclined to react violently; fervid
(of the elements) as if showing violent anger	ruthless in competition
marked by extreme and violent energy	violently agitated and turbulent
	marked by extreme and violent energy