radicalize vs alter

radicalize and alter both are verbs.

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

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

Other hypernyms of radicalize include change, modify.

radicalize (verb)	alter (verb)
make more radical in social or political outlook	remove the ovaries of
	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