republican vs democratic

republican is a noun but democratic is not a noun.

Word	Noun	Adjective	Verb	Adverb
republican	Yes	Yes	No	No
democratic	No	Yes	No	No

republican (noun)	democratic (noun)
an advocate of a republic (usually in opposition to a monarchy)

republican (adjective)	democratic (adjective)
relating to or belonging to the Republican Party	characterized by or advocating or based upon the principles of democracy or social equality
having the supreme power lying in the body of citizens entitled to vote for officers and representatives responsible to them or characteristic of such government	representing or appealing to or adapted for the benefit of the people at large