artificial lake vs man-made lake

artificial lake and man-made lake both are nouns.

Word	Noun	Adjective	Verb	Adverb
artificial lake	Yes	No	No	No
man-made lake	Yes	No	No	No

As nouns, artificial lake and man-made lake are synonyms defined as:

artificial lake and man-made 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 synonyms of artificial lake include reservoir.

artificial lake (noun)	man-made lake (noun)
lake used to store water for community use; a lake (natural or artificial) used to store water and used as a source of water	lake used to store water for community use; a lake (natural or artificial) used to store water and used as a source of water