lake vs oxbow lake

lake and oxbow lake both are nouns.

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

As nouns, oxbow lake is a hyponym of lake; that is, oxbow lake is a word with a more specific, narrower meaning than lake:

lake: a body of (usually fresh) water surrounded by land
oxbow lake: a crescent-shaped lake (often temporary) that is formed when a meander of a river is cut off from the main channel

Other hyponyms of lake include artificial lake, man-made lake, reservoir, bayou, lagoon, laguna, lagune, loch, lough, pond, pool, tarn.

lake (noun)	oxbow lake (noun)
a body of (usually fresh) water surrounded by land	a crescent-shaped lake (often temporary) that is formed when a meander of a river is cut off from the main channel
any of numerous bright translucent organic pigments
a purplish red pigment prepared from lac or cochineal