fiat vs decree

fiat and decree both are nouns.

Word	Noun	Adjective	Verb	Adverb
fiat	Yes	No	No	No
decree	Yes	No	Yes	No

As nouns, fiat and decree are synonyms defined as:

fiat and decree: a legally binding command or decision entered on the court record (as if issued by a court or judge)

Other synonyms of fiat include edict, order, rescript.

fiat (noun)	decree (noun)
a legally binding command or decision entered on the court record (as if issued by a court or judge)	a legally binding command or decision entered on the court record (as if issued by a court or judge)

fiat (verb)	decree (verb)
	decide with authority
	issue a decree