coagulate vs alter

coagulate is an adjective but alter is not an adjective.

Word	Noun	Adjective	Verb	Adverb
coagulate	No	Yes	Yes	No
alter	No	No	Yes	No

As verbs, alter is a hypernym of coagulate; that is, alter is a word with a broader meaning than coagulate:

Other hypernyms of coagulate include change, modify.

coagulate (adjective)	alter (adjective)
transformed from a liquid into a soft semisolid or solid mass

coagulate (verb)	alter (verb)
change from a liquid to a thickened or solid state	remove the ovaries of
cause to change from a liquid to a solid or thickened state	become different in some particular way, without permanently losing one's or its former characteristics or essence
	cause to change; make different; cause a transformation
	insert words into texts, often falsifying it thereby
	make an alteration to