Martin vs Steve Martin

Martin and Steve Martin both are nouns.

Word	Noun	Adjective	Verb	Adverb
Martin	Yes	No	No	No
Steve Martin	Yes	No	No	No

As nouns, Martin and Steve Martin are synonyms defined as:

Martin and Steve Martin: United States actor and comedian (born in 1945)

Martin (noun)	Steve Martin (noun)
United States singer (1917-1995)	United States actor and comedian (born in 1945)
United States actress (1913-1990)
United States actor and comedian (born in 1945)
French bishop who is a patron saint of France (died in 397)