Apollo vs Phoebus

Apollo and Phoebus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Apollo	Yes	No	No	No
Phoebus	Yes	No	No	No

As nouns, Apollo and Phoebus are synonyms defined as:

Apollo and Phoebus: (Greek mythology) Greek god of light; god of prophecy and poetry and music and healing; son of Zeus and Leto; twin brother of Artemis

Other synonyms of Apollo include Phoebus Apollo.

Apollo (noun)	Phoebus (noun)
(Greek mythology) Greek god of light; god of prophecy and poetry and music and healing; son of Zeus and Leto; twin brother of Artemis	(Greek mythology) Greek god of light; god of prophecy and poetry and music and healing; son of Zeus and Leto; twin brother of Artemis