Harvard vs John Harvard

Harvard and John Harvard both are nouns.

Word	Noun	Adjective	Verb	Adverb
Harvard	Yes	No	No	No
John Harvard	Yes	No	No	No

As nouns, Harvard and John Harvard are synonyms defined as:

Harvard and John Harvard: American philanthropist who left his library and half his estate to the Massachusetts college that now bears his name (1607-1638)

Harvard (noun)	John Harvard (noun)
a university in Massachusetts	American philanthropist who left his library and half his estate to the Massachusetts college that now bears his name (1607-1638)
American philanthropist who left his library and half his estate to the Massachusetts college that now bears his name (1607-1638)