Constitutional Convention vs Founding Father

Constitutional Convention and Founding Father both are nouns.

Word	Noun	Adjective	Verb	Adverb
Constitutional Convention	Yes	No	No	No
Founding Father	Yes	No	No	No

Constitutional Convention (noun)	Founding Father (noun)
the convention of United States statesmen who drafted the United States Constitution in 1787	a member of the Constitutional Convention that drafted the United States Constitution in 1787