Orcus vs Dis Pater

Orcus and Dis Pater both are nouns.

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

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

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

Other synonyms of Orcus include Dis, Pluto.

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