lake vs artificial lake

lake and artificial lake both are nouns.

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

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

lake: a body of (usually fresh) water surrounded by land
artificial lake: lake used to store water for community use; a lake (natural or artificial) used to store water and used as a source of water

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

lake (noun)	artificial lake (noun)
a body of (usually fresh) water surrounded by land	lake used to store water for community use; a lake (natural or artificial) used to store water and used as a source of water
any of numerous bright translucent organic pigments
a purplish red pigment prepared from lac or cochineal