fuse vs meld

fuse and meld both are nouns.

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

As verbs, fuse and meld are synonyms defined as:

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

As verbs, meld is a hyponym of fuse; that is, meld is a word with a more specific, narrower meaning than fuse:

fuse (noun)	meld (noun)
any igniter that is used to initiate the burning of a propellant	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
an electrical device that can interrupt the flow of electrical current when it is overloaded

fuse (verb)	meld (verb)
mix together different elements	mix together different elements
make liquid or plastic by heating	lose its distinct outline or shape; blend gradually
become plastic or fluid or liquefied from heat	announce for a score; of cards in a card game
equip with a fuse; provide with a fuse