overcloud vs alter

overcloud and alter both are verbs.

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

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

Other hypernyms of overcloud include change, modify.

overcloud (verb)	alter (verb)
make unintelligible or unclear	remove the ovaries of
become covered with clouds	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