Kelly vs Grace Kelly

Kelly and Grace Kelly both are nouns.

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

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

Kelly and Grace Kelly: United States film actress who retired when she married into the royal family of Monaco (1928-1982)

Other synonyms of Kelly include Grace Patricia Kelly, Princess Grace of Monaco.

Kelly (noun)	Grace Kelly (noun)
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 film actress who retired when she married into the royal family of Monaco (1928-1982)
United States circus clown (1898-1979)