Sion vs Akko

Sion and Akko both are nouns.

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

Sion (noun)	Akko (noun)
an imaginary place considered to be perfect or ideal	a town and port in northwestern Israel in the eastern Mediterranean
Jewish republic in southwestern Asia at eastern end of Mediterranean; formerly part of Palestine
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