war vs War of Greek Independence

war and War of Greek Independence both are nouns.

Word	Noun	Adjective	Verb	Adverb
war	Yes	No	Yes	No
War of Greek Independence	Yes	No	No	No

war (noun)	War of Greek Independence (noun)
the waging of armed conflict against an enemy	the Greeks rebelled against Turkish rule in 1821; with the support of England and France and Russia they won independence in 1828 at Navarino (although the country included only half its present size)
a concerted campaign to end something that is injurious
an active struggle between competing entities
a legal state created by a declaration of war and ended by official declaration during which the international rules of war apply

war (verb)	War of Greek Independence (verb)
make or wage war