physician vs E. A. von Willebrand

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

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

physician (noun)	E. A. von Willebrand (noun)
a licensed medical practitioner	Finnish physician who first described vascular hemophilia (1870-1949)