announcement vs proclamation

announcement and proclamation both are nouns.

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

As nouns, announcement and proclamation are synonyms defined as:

Other synonyms of announcement include annunciation, declaration.

announcement (noun)	proclamation (noun)
a public statement containing information about an event that has happened or is going to happen	the formal act of proclaiming; giving public notice
a formal public statement	a formal public statement