lower vs modify

lower is a noun but modify is not a noun.

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

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

Other hypernyms of lower include alter, change.

lower (noun)	modify (noun)
the lower of two berths

lower (adjective)	modify (adjective)
the bottom one of two

lower (verb)	modify (verb)
make lower or quieter	make less severe or harsh or extreme
set lower	add a modifier to a constituent
cause to drop or sink	cause to change; make different; cause a transformation
move something or somebody to a lower position
look angry or sullen, wrinkle one's forehead, as if to signal disapproval