cork vs uncork

cork is a noun but uncork is not a noun.

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

cork (noun)	uncork (noun)
the plug in the mouth of a bottle (especially a wine bottle)
a small float usually made of cork; attached to a fishing line
outer bark of the cork oak; used for stoppers for bottles etc.
(botany) outer tissue of bark; a protective layer of dead cells

cork (verb)	uncork (verb)
stuff with cork	draw the cork from (bottles)
close a bottle with a cork	release