Seleucus vs Seleucus I

Seleucus and Seleucus I both are nouns.

Word	Noun	Adjective	Verb	Adverb
Seleucus	Yes	No	No	No
Seleucus I	Yes	No	No	No

As nouns, Seleucus and Seleucus I are synonyms defined as:

Seleucus and Seleucus I: Macedonian general who accompanied Alexander the Great into Asia; founded a line of kings who reigned in Asia Minor until 65 BC (358-281 BC)

Other synonyms of Seleucus include Seleucus I Nicator.

Seleucus (noun)	Seleucus I (noun)
Macedonian general who accompanied Alexander the Great into Asia; founded a line of kings who reigned in Asia Minor until 65 BC (358-281 BC)	Macedonian general who accompanied Alexander the Great into Asia; founded a line of kings who reigned in Asia Minor until 65 BC (358-281 BC)