Baikal vs Lake Baikal

Baikal and Lake Baikal both are nouns.

Word	Noun	Adjective	Verb	Adverb
Baikal	Yes	No	No	No
Lake Baikal	Yes	No	No	No

As nouns, Baikal and Lake Baikal are synonyms defined as:

Baikal and Lake Baikal: the largest freshwater lake in Asia or Europe and the deepest lake in the world

Other synonyms of Baikal include Baykal, Lake Baykal.

Baikal (noun)	Lake Baikal (noun)
the largest freshwater lake in Asia or Europe and the deepest lake in the world	the largest freshwater lake in Asia or Europe and the deepest lake in the world