barker vs bark

barker and bark both are nouns.

Word	Noun	Adjective	Verb	Adverb
barker	Yes	No	No	No
bark	Yes	No	Yes	No

barker (noun)	bark (noun)
informal terms for dogs	a sailing ship with 3 (or more) masts
someone who stands in front of a show (as at a carnival) and gives a loud colorful sales talk to potential customers	the sound made by a dog
	a noise resembling the bark of a dog
	tough protective covering of the woody stems and roots of trees and other woody plants