doctor vs E. A. von Willebrand

doctor and E. A. von Willebrand both are nouns.

Word	Noun	Adjective	Verb	Adverb
doctor	Yes	No	Yes	No
E. A. von Willebrand	Yes	No	No	No

doctor (noun)	E. A. von Willebrand (noun)
children take the roles of physician or patient or nurse and pretend they are at the physician's office	Finnish physician who first described vascular hemophilia (1870-1949)
a licensed medical practitioner
a person who holds Ph.D. degree (or the equivalent) from an academic institution

doctor (verb)	E. A. von Willebrand (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