Romanic vs Roman

Romanic is not a noun while Roman is a noun.

Word	Noun	Adjective	Verb	Adverb
Romanic	No	Yes	No	No
Roman	Yes	Yes	No	No

As adjectives, Romanic and Roman are synonyms defined as:

Romanic and Roman: of or relating to or derived from Rome (especially ancient Rome)

Romanic (noun)	Roman (noun)
	a resident of modern Rome
	an inhabitant of the ancient Roman Empire

Romanic (adjective)	Roman (adjective)
of or relating to or derived from Rome (especially ancient Rome)	of or relating to or supporting Romanism
	of or relating to or derived from Rome (especially ancient Rome)
	characteristic of the modern type that most directly represents the type used in ancient Roman inscriptions