amalgamate vs modify

amalgamate is an adjective but modify is not an adjective.

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

As verbs, modify is a hypernym of amalgamate; that is, modify is a word with a broader meaning than amalgamate:

Other hypernyms of amalgamate include alter, change.

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

amalgamate (verb)	modify (verb)
to bring or combine together or with something else	make less severe or harsh or extreme
	add a modifier to a constituent
	cause to change; make different; cause a transformation