bobber vs cork

bobber and cork both are nouns.

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

As nouns, bobber and cork are synonyms defined as:

bobber and cork: a small float usually made of cork; attached to a fishing line

Other synonyms of bobber include bob, bobfloat.

bobber (noun)	cork (noun)
a small float usually made of cork; attached to a fishing line	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

bobber (verb)	cork (verb)
	stuff with cork
	close a bottle with a cork