ludology vs game studies

ludology and game studies both are nouns.

Word	Noun	Adjective	Verb	Adverb
ludology	Yes	No	No	No
game studies	Yes	No	No	No

As nouns, ludology and game studies are synonyms defined as:

ludology and game studies: The study of games and gaming, especially video games.

ludology (noun)	game studies (noun)
The study of games and gaming, especially video games.	The study of games and gaming, especially video games.