war vs Six Day War

war and Six Day War both are nouns.

Word	Noun	Adjective	Verb	Adverb
war	Yes	No	Yes	No
Six Day War	Yes	No	No	No

war (noun)	Six Day War (noun)
the waging of armed conflict against an enemy	tension between Arabs and Israeli erupted into a brief war in June 1967; Israel emerged as a major power in the Middle East
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)	Six Day War (verb)
make or wage war