Orcus vs Dis

Orcus and Dis both are nouns.

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

As nouns, Orcus and Dis are synonyms defined as:

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

Other synonyms of Orcus include Dis Pater, Pluto.

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