baseball player vs Henry Louis Aaron

baseball player and Henry Louis Aaron both are nouns.

Word	Noun	Adjective	Verb	Adverb
baseball player	Yes	No	No	No
Henry Louis Aaron	Yes	No	No	No

baseball player (noun)	Henry Louis Aaron (noun)
an athlete who plays baseball	United States professional baseball player who hit more home runs than Babe Ruth (born in 1934)