meld vs coalesce

meld is a noun but coalesce is not a noun.

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

As verbs, meld and coalesce are synonyms defined as:

Other synonyms of meld include blend, combine, commingle, conflate, flux, fuse, immix, merge, mix.

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

Other hypernyms of meld include blend, combine, commingle, conflate, flux, fuse, immix, meld, merge, mix.

meld (noun)	coalesce (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)	coalesce (verb)
mix together different elements	mix together different elements
lose its distinct outline or shape; blend gradually	fuse or cause to grow together
announce for a score; of cards in a card game