widen vs alter

widen and alter both are verbs.

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

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

Other hypernyms of widen include change, modify.

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

widen: make (clothes) larger
alter: become different in some particular way, without permanently losing one's or its former characteristics or essence

Other hypernyms of widen include change, vary.

widen (verb)	alter (verb)
become broader or wider or more extensive	remove the ovaries of
extend in scope or range or area	become different in some particular way, without permanently losing one's or its former characteristics or essence
make wider	cause to change; make different; cause a transformation
make (clothes) larger	insert words into texts, often falsifying it thereby
	make an alteration to