Xizang vs Sitsang

Xizang and Sitsang both are nouns.

Word	Noun	Adjective	Verb	Adverb
Xizang	Yes	No	No	No
Sitsang	Yes	No	No	No

As nouns, Xizang and Sitsang are synonyms defined as:

Xizang and Sitsang: an autonomous region of the Peoples Republic of China; located in the Himalayas

Other synonyms of Xizang include Thibet, Tibet, Tibet Autonomous Region.

Xizang (noun)	Sitsang (noun)
an autonomous region of the Peoples Republic of China; located in the Himalayas	an autonomous region of the Peoples Republic of China; located in the Himalayas