U.S. Constitution vs Nineteenth Amendment

U.S. Constitution and Nineteenth Amendment both are nouns.

Word	Noun	Adjective	Verb	Adverb
U.S. Constitution	Yes	No	No	No
Nineteenth Amendment	Yes	No	No	No

U.S. Constitution (noun)	Nineteenth Amendment (noun)
the constitution written at the Constitutional Convention in Philadelphia in 1787 and subsequently ratified by the original thirteen states	an amendment to the Constitution of the United States adopted in 1920; guarantees that no state can deny the right to vote on the basis of sex