merge vs alloy

merge is not a noun while alloy is a noun.

Word	Noun	Adjective	Verb	Adverb
merge	No	No	Yes	No
alloy	Yes	No	Yes	No

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

merge (noun)	alloy (noun)
	the state of impairing the quality or reducing the value of something
	a mixture containing two or more metallic elements or metallic and nonmetallic elements usually fused together or dissolving into each other when molten

merge (verb)	alloy (verb)
become one	lower in value by increasing the base-metal content
mix together different elements	make an alloy of
join or combine