amalgamate vs intermix

amalgamate is an adjective but intermix is not an adjective.

Word	Noun	Adjective	Verb	Adverb
amalgamate	No	Yes	Yes	No
intermix	No	No	Yes	No

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

Other hyponyms of amalgamate include aggregate, combine, concoct, combine, compound, blend, immingle, intermingle.

amalgamate (adjective)	intermix (adjective)
joined together into a whole

amalgamate (verb)	intermix (verb)
to bring or combine together or with something else	combine into one