cosmology vs cosmogony

cosmology and cosmogony both are nouns.

Word	Noun	Adjective	Verb	Adverb
cosmology	Yes	No	No	No
cosmogony	Yes	No	No	No

As nouns, cosmology and cosmogony are synonyms defined as:

cosmology and cosmogony: the branch of astrophysics that studies the origin and evolution and structure of the universe

Other synonyms of cosmology include cosmogeny.

cosmology (noun)	cosmogony (noun)
the branch of astrophysics that studies the origin and evolution and structure of the universe	the branch of astrophysics that studies the origin and evolution and structure of the universe
the metaphysical study of the origin and nature of the universe