amend vs modify

amend and modify both are verbs.

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

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

Other hypernyms of amend include alter, change.

amend (verb)	modify (verb)
to make better	make less severe or harsh or extreme
set straight or right	add a modifier to a constituent
make amendments to	cause to change; make different; cause a transformation