meld vs announce

meld is a noun but announce is not a noun.

Word	Noun	Adjective	Verb	Adverb
meld	Yes	No	Yes	No
announce	No	No	Yes	No

As verbs, announce is a hypernym of meld; that is, announce is a word with a broader meaning than meld:

Other hypernyms of meld include denote.

meld (noun)	announce (noun)
a form of rummy using two decks of cards and four jokers; jokers and deuces are wild; the object is to form groups of the same rank

meld (verb)	announce (verb)
mix together different elements	make known; make an announcement
lose its distinct outline or shape; blend gradually	foreshadow or presage
announce for a score; of cards in a card game	announce publicly or officially
	give the names of