spigot vs stopper

spigot and stopper both are nouns.

Word	Noun	Adjective	Verb	Adverb
spigot	Yes	No	No	No
stopper	Yes	No	Yes	No

As nouns, stopper is a hypernym of spigot; that is, stopper is a word with a broader meaning than spigot:

Other hypernyms of spigot include plug, stopple.

spigot (noun)	stopper (noun)
a regulator for controlling the flow of a liquid from a reservoir	blockage consisting of an object designed to fill a hole tightly
a plug for a bunghole in a cask	(bridge) a playing card with a value sufficiently high to insure taking a trick in a particular suit
	an act so striking or impressive that the show must be delayed until the audience quiets down
	a remark to which there is no polite conversational reply

spigot (verb)	stopper (verb)
	close or secure with or as if with a stopper