visualise vs modify

visualise and modify both are verbs.

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

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

Other hypernyms of visualise include alter, change.

visualise (verb)	modify (verb)
make visible	make less severe or harsh or extreme
imagine; conceive of; see in one's mind	add a modifier to a constituent
form a mental picture of something that is invisible or abstract	cause to change; make different; cause a transformation
view the outline of by means of an X-ray