tub stopper vs basin plug

tub stopper and basin plug both are nouns.

Word	Noun	Adjective	Verb	Adverb
tub stopper	Yes	No	No	No
basin plug	Yes	No	No	No

As nouns, tub stopper and basin plug are synonyms defined as:

tub stopper and basin plug: A plug intended for washbasins, bath tubs and other similar water containers.

Other synonyms of tub stopper include bath plug, sink plug.

tub stopper (noun)	basin plug (noun)
A plug intended for washbasins, bath tubs and other similar water containers.	A plug intended for washbasins, bath tubs and other similar water containers.