Dis vs Dis Pater

Dis and Dis Pater both are nouns.

Word	Noun	Adjective	Verb	Adverb
Dis	Yes	No	No	No
Dis Pater	Yes	No	No	No

As nouns, Dis and Dis Pater are synonyms defined as:

Dis and Dis Pater: (Roman mythology) god of the underworld; counterpart of Greek Hades

Other synonyms of Dis include Orcus, Pluto.

Dis (noun)	Dis Pater (noun)
(Roman mythology) god of the underworld; counterpart of Greek Hades	(Roman mythology) god of the underworld; counterpart of Greek Hades