sack vs drop

sack and drop both are nouns.

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

As verbs, drop is a hyponym of sack; that is, drop is a word with a more specific, narrower meaning than sack:

sack (noun)	drop (noun)
the termination of someone's employment (leaving them free to depart)	the act of dropping something
the plundering of a place by an army or mob; usually involves destruction and slaughter	a central depository where things can be left or picked up
a bag made of paper or plastic for holding customer's purchases	a curtain that can be lowered and raised onto a stage from the flies; often used as background scenery
a loose-fitting dress hanging straight from the shoulders without a waist	a sudden sharp decrease in some quantity
a hanging bed of canvas or rope netting (usually suspended between two trees); swings easily	a free and rapid descent by the force of gravity
a woman's full loose hiplength jacket	a predetermined hiding place for the deposit and distribution of illicit goods (such as drugs or stolen property)
any of various light dry strong white wine from Spain and Canary Islands (including sherry)	a steep high face of rock
the quantity contained in a sack	a small indefinite quantity (especially of a liquid)
an enclosed space	a shape that is spherical and small

sack (verb)	drop (verb)
put in a sack	give birth; used for animals
plunder (a town) after capture	grow progressively worse
make as a net profit	go down in value
terminate the employment of; discharge from an office or position	stop pursuing or acting
	change from one level to another
	lower the pitch of (musical notes)
	fall or sink into a state of exhaustion or death
	leave undone or leave out
	omit (a letter or syllable) in speaking or writing
	utter with seeming casualness
	lose (a game)
	take (a drug, especially LSD), by mouth
	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