Kelly vs Gene Kelly

Kelly and Gene Kelly both are nouns.

Word	Noun	Adjective	Verb	Adverb
Kelly	Yes	No	No	No
Gene Kelly	Yes	No	No	No

As nouns, Kelly and Gene Kelly are synonyms defined as:

Kelly and Gene Kelly: United States dancer who performed in many musical films (1912-1996)

Other synonyms of Kelly include Eugene Curran Kelly.

Kelly (noun)	Gene Kelly (noun)
United States dancer who performed in many musical films (1912-1996)	United States dancer who performed in many musical films (1912-1996)
United States film actress who retired when she married into the royal family of Monaco (1928-1982)
United States circus clown (1898-1979)