statue vs Olympian Zeus

statue and Olympian Zeus both are nouns.

Word	Noun	Adjective	Verb	Adverb
statue	Yes	No	No	No
Olympian Zeus	Yes	No	No	No

As nouns, Olympian Zeus is a hyponym of statue; that is, Olympian Zeus is a word with a more specific, narrower meaning than statue:

statue: a sculpture representing a human or animal
Olympian Zeus: a seated statue of the supreme god of ancient Greek mythology created for the temple at Olympia; the statue was 40 feet tall and rested on a base that was 12 feet high

Other hyponyms of statue include herm, nude, nude sculpture, nude statue, sphinx, term, terminal figure, terminus.

statue (noun)	Olympian Zeus (noun)
a sculpture representing a human or animal	a seated statue of the supreme god of ancient Greek mythology created for the temple at Olympia; the statue was 40 feet tall and rested on a base that was 12 feet high