imperial decree vs decree

imperial decree and decree both are nouns.

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

As nouns, decree is a hypernym of imperial decree; that is, decree is a word with a broader meaning than imperial decree:

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

Other hypernyms of imperial decree include edict, fiat, order, rescript.

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

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