Phoebus vs Phoebus Apollo

Phoebus and Phoebus Apollo both are nouns.

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

As nouns, Phoebus and Phoebus Apollo are synonyms defined as:

Phoebus and Phoebus Apollo: (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 Phoebus include Apollo.

Phoebus (noun)	Phoebus Apollo (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