King vs B. B. King

King and B. B. King both are nouns.

Word	Noun	Adjective	Verb	Adverb
King	Yes	No	No	No
B. B. King	Yes	No	No	No

As nouns, King and B. B. King are synonyms defined as:

King and B. B. King: United States guitar player and singer of the blues (born in 1925)

Other synonyms of King include Riley B King.

King (noun)	B. B. King (noun)
United States charismatic civil rights leader and Baptist minister who campaigned against the segregation of Blacks (1929-1968)	United States guitar player and singer of the blues (born in 1925)
United States guitar player and singer of the blues (born in 1925)
United States woman tennis player (born in 1943)