Pallas vs Pallas Athena

Pallas and Pallas Athena both are nouns.

Word	Noun	Adjective	Verb	Adverb
Pallas	Yes	No	No	No
Pallas Athena	Yes	No	No	No

As nouns, Pallas and Pallas Athena are synonyms defined as:

Pallas and Pallas Athena: (Greek mythology) goddess of wisdom and useful arts and prudent warfare; guardian of Athens; identified with Roman Minerva

Other synonyms of Pallas include Athena, Athene, Pallas Athene.

Pallas (noun)	Pallas Athena (noun)
a large asteroid; the second asteroid to be discovered	(Greek mythology) goddess of wisdom and useful arts and prudent warfare; guardian of Athens; identified with Roman Minerva
(Greek mythology) goddess of wisdom and useful arts and prudent warfare; guardian of Athens; identified with Roman Minerva