Spanish-American War vs Battle of Manila Bay

Spanish-American War and Battle of Manila Bay both are nouns.

Word	Noun	Adjective	Verb	Adverb
Spanish-American War	Yes	No	No	No
Battle of Manila Bay	Yes	No	No	No

Spanish-American War (noun)	Battle of Manila Bay (noun)
a war between the United States and Spain in 1898	a naval battle in the Spanish-American War (1898); the American fleet under Admiral Dewey defeated the Spanish fleet