war vs Trojan War

war and Trojan War both are nouns.

Word	Noun	Adjective	Verb	Adverb
war	Yes	No	Yes	No
Trojan War	Yes	No	No	No

war (noun)	Trojan War (noun)
the waging of armed conflict against an enemy	(Greek mythology) a great war fought between Greece and Troy; the Greeks sailed to Troy to recover Helen of Troy, the beautiful wife of Menelaus who had been abducted by Paris; after ten years the Greeks (via the Trojan Horse) achieved final victory and burned Troy to the ground
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)	Trojan War (verb)
make or wage war