Battle of Gettysburg vs American Civil War

Battle of Gettysburg and American Civil War both are nouns.

Word	Noun	Adjective	Verb	Adverb
Battle of Gettysburg	Yes	No	No	No
American Civil War	Yes	No	No	No

Battle of Gettysburg (noun)	American Civil War (noun)
a battle of the American Civil War (1863); the defeat of Robert E. Lee's invading Confederate Army was a major victory for the Union	civil war in the United States between the North and the South; 1861-1865