doctor vs Harry F. Klinefelter

doctor and Harry F. Klinefelter both are nouns.

Word	Noun	Adjective	Verb	Adverb
doctor	Yes	No	Yes	No
Harry F. Klinefelter	Yes	No	No	No

doctor (noun)	Harry F. Klinefelter (noun)
children take the roles of physician or patient or nurse and pretend they are at the physician's office	United States physician who first described the XXY-syndrome (born in 1912)
a licensed medical practitioner
a person who holds Ph.D. degree (or the equivalent) from an academic institution

doctor (verb)	Harry F. Klinefelter (verb)
give medical treatment to
alter and make impure, as with the intention to deceive
restore by replacing a part or putting together what is torn or broken