cork vs plug

cork and plug both are nouns.

Word	Noun	Adjective	Verb	Adverb
cork	Yes	No	Yes	No
plug	Yes	No	Yes	No

As nouns, plug is a hypernym of cork; that is, plug is a word with a broader meaning than cork:

Other hypernyms of cork include stopper, stopple.

As verbs, plug is a hypernym of cork; that is, plug is a word with a broader meaning than cork:

Other hypernyms of cork include secure, stop up.

cork (noun)	plug (noun)
the plug in the mouth of a bottle (especially a wine bottle)	an old or over-worked horse
a small float usually made of cork; attached to a fishing line	blockage consisting of an object designed to fill a hole tightly
outer bark of the cork oak; used for stoppers for bottles etc.	an upright hydrant for drawing water to use in fighting a fire
(botany) outer tissue of bark; a protective layer of dead cells	electrical device that fits into the cylinder head of an internal-combustion engine and ignites the gas by means of an electric spark
	an electrical device with two or three pins that is inserted in a socket to make an electrical connection
	blatant or sensational promotion
	a wad of something chewable as tobacco

cork (verb)	plug (verb)
stuff with cork	persist in working hard
close a bottle with a cork	insert as a plug
	insert a plug into
	replace the center of a coin with a baser metal
	make a plug for; praise the qualities or in order to sell or promote
	deliver a quick blow to
	fill or close tightly with or as if with a plug