Sion vs Utopia

Sion and Utopia both are nouns.

Word	Noun	Adjective	Verb	Adverb
Sion	Yes	No	No	No
Utopia	Yes	No	No	No

As nouns, Sion and Utopia are synonyms defined as:

Other synonyms of Sion include Zion.

Sion (noun)	Utopia (noun)
an imaginary place considered to be perfect or ideal	an imaginary place considered to be perfect or ideal
Jewish republic in southwestern Asia at eastern end of Mediterranean; formerly part of Palestine	a book written by Sir Thomas More (1516) describing the perfect society on an imaginary island
originally a stronghold captured by David (the 2nd king of the Israelites); above it was built a temple and later the name extended to the whole hill; finally it became a synonym for the city of Jerusalem