announcement vs edict

announcement and edict both are nouns.

Word	Noun	Adjective	Verb	Adverb
announcement	Yes	No	No	No
edict	Yes	No	No	No

As nouns, edict is a hyponym of announcement; that is, edict is a word with a more specific, narrower meaning than announcement:

Other hyponyms of announcement include promulgation.

announcement (noun)	edict (noun)
a public statement containing information about an event that has happened or is going to happen	a legally binding command or decision entered on the court record (as if issued by a court or judge)
a formal public statement	a formal or authoritative proclamation