overcloud vs modify

overcloud and modify both are verbs.

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

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

Other hypernyms of overcloud include alter, change.

overcloud (verb)	modify (verb)
make unintelligible or unclear	make less severe or harsh or extreme
become covered with clouds	add a modifier to a constituent
	cause to change; make different; cause a transformation