Lake Baikal vs Baykal

Lake Baikal and Baykal both are nouns.

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

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

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

Other synonyms of Lake Baikal include Baikal, Lake Baykal.

Lake Baikal (noun)	Baykal (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