cast of characters vs dramatis personae

cast of characters and dramatis personae both are nouns.

Word	Noun	Adjective	Verb	Adverb
cast of characters	Yes	No	No	No
dramatis personae	Yes	No	No	No

As nouns, cast of characters and dramatis personae are synonyms defined as:

Other synonyms of cast of characters include cast.

cast of characters (noun)	dramatis personae (noun)
the actors in a play	the actors in a play