Hsian vs Sian

Hsian and Sian both are nouns.

Word	Noun	Adjective	Verb	Adverb
Hsian	Yes	No	No	No
Sian	Yes	No	No	No

As nouns, Hsian and Sian are synonyms defined as:

Hsian and Sian: a city of central China; capital of ancient Chinese empire 221-206 BC

Other synonyms of Hsian include Changan, Singan, Xi'an, Xian.

Hsian (noun)	Sian (noun)
a city of central China; capital of ancient Chinese empire 221-206 BC	a city of central China; capital of ancient Chinese empire 221-206 BC