war vs Vietnam

war and Vietnam both are nouns.

Word	Noun	Adjective	Verb	Adverb
war	Yes	No	Yes	No
Vietnam	Yes	No	No	No

war (noun)	Vietnam (noun)
the waging of armed conflict against an enemy	a prolonged war (1954-1975) between the communist armies of North Vietnam who were supported by the Chinese and the armies of South Vietnam who were supported by the United States
a concerted campaign to end something that is injurious	a communist state in Indochina on the South China Sea; achieved independence from France in 1945
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)	Vietnam (verb)
make or wage war