drop vs withdraw

drop is a noun but withdraw is not a noun.

Word	Noun	Adjective	Verb	Adverb
drop	Yes	No	Yes	No
withdraw	No	No	Yes	No

As verbs, withdraw is a hypernym of drop; that is, withdraw is a word with a broader meaning than drop:

drop: to remove
withdraw: remove something concrete, as by lifting, pushing, or taking off, or remove something abstract

Other hypernyms of drop include remove, take, take away.

drop (noun)	withdraw (noun)
the act of dropping something
a central depository where things can be left or picked up
a curtain that can be lowered and raised onto a stage from the flies; often used as background scenery
a sudden sharp decrease in some quantity
a free and rapid descent by the force of gravity
a predetermined hiding place for the deposit and distribution of illicit goods (such as drugs or stolen property)
a steep high face of rock
a small indefinite quantity (especially of a liquid)
a shape that is spherical and small

drop (verb)	withdraw (verb)
give birth; used for animals	keep away from others
grow progressively worse	remove something concrete, as by lifting, pushing, or taking off, or remove something abstract
go down in value	make a retreat from an earlier commitment or activity
stop pursuing or acting	take back what one has said
change from one level to another	release from something that holds fast, connects, or entangles
lower the pitch of (musical notes)	lose interest
fall or sink into a state of exhaustion or death	pull back or move away or backward
leave undone or leave out	remove (a commodity) from (a supply source)
omit (a letter or syllable) in speaking or writing	cause to be returned
utter with seeming casualness	break from a meeting or gathering
lose (a game)	withdraw from active participation
take (a drug, especially LSD), by mouth	retire gracefully
remove (cargo, people, etc.) from and leave
to remove
cause to fall by or as if by delivering a blow
let or cause to fall in drops
to fall vertically
let fall to the ground
fall or descend to a lower place or level
pay out
stop associating with
terminate an association with
hang loosely