decreed vs prescribed

decreed and prescribed both are adjectives.

Word	Noun	Adjective	Verb	Adverb
decreed	No	Yes	No	No
prescribed	No	Yes	No	No

As adjectives, decreed and prescribed are synonyms defined as:

decreed and prescribed: fixed or established especially by order or command

Other synonyms of decreed include appointed, ordained.

decreed (adjective)	prescribed (adjective)
fixed or established especially by order or command	formally laid down or imposed
	set down as a rule or guide
	conforming to set usage, procedure, or discipline
	fixed or established especially by order or command