Paris vs Parisian

Paris and Parisian both are nouns.

Word	Noun	Adjective	Verb	Adverb
Paris	Yes	No	No	No
Parisian	Yes	Yes	No	No

Paris (noun)	Parisian (noun)
the capital and largest city of France; and international center of culture and commerce	a native or resident of Paris
a town in northeastern Texas
(Greek mythology) the prince of Troy who abducted Helen from her husband Menelaus and provoked the Trojan War
sometimes placed in subfamily Trilliaceae

Paris (adjective)	Parisian (adjective)
	of or relating to or characteristic of Paris or its inhabitants