American Civil War vs Overland Campaign

American Civil War and Overland Campaign both are nouns.

Word	Noun	Adjective	Verb	Adverb
American Civil War	Yes	No	No	No
Overland Campaign	Yes	No	No	No

American Civil War (noun)	Overland Campaign (noun)
civil war in the United States between the North and the South; 1861-1865	American Civil War; a series of indecisive battles in Grant's campaign (1864) against Lee in which both armies suffered terrible losses