drainplug vs stopper

drainplug and stopper both are nouns.

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

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

Other hypernyms of drainplug include plug, stopple.

drainplug (noun)	stopper (noun)
a removable plug for holding water in a tub or basin	blockage consisting of an object designed to fill a hole tightly
	(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

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