genus Paris vs Paris

genus Paris and Paris both are nouns.

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

As nouns, genus Paris and Paris are synonyms defined as:

genus Paris (noun)	Paris (noun)
sometimes placed in subfamily Trilliaceae	the capital and largest city of France; and international center of culture and commerce
	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