bayou vs lake

bayou and lake both are nouns.

Word	Noun	Adjective	Verb	Adverb
bayou	Yes	No	No	No
lake	Yes	No	No	No

As nouns, lake is a hypernym of bayou; that is, lake is a word with a broader meaning than bayou:

bayou: a swampy arm or slow-moving outlet of a lake (term used mainly in Mississippi and Louisiana)
lake: a body of (usually fresh) water surrounded by land

bayou (noun)	lake (noun)
a swampy arm or slow-moving outlet of a lake (term used mainly in Mississippi and Louisiana)	a body of (usually fresh) water surrounded by land
	any of numerous bright translucent organic pigments
	a purplish red pigment prepared from lac or cochineal