meld vs combine

meld and combine both are nouns.

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

As verbs, meld and combine are synonyms defined as:

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

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

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

meld (noun)	combine (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	harvester that heads and threshes and cleans grain while moving across the field
	an occurrence that results in things being united
	a consortium of independent organizations formed to limit competition by controlling the production and distribution of a product or service

meld (verb)	combine (verb)
mix together different elements	mix together different elements
lose its distinct outline or shape; blend gradually	put or add together
announce for a score; of cards in a card game	combine so as to form a whole; mix
	gather in a mass, sum, or whole
	add together from different sources
	join for a common purpose or in a common action
	have or possess in combination