struggle vs war

struggle and war both are nouns.

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

As nouns, war is a hyponym of struggle; that is, war is a word with a more specific, narrower meaning than struggle:

As verbs, war is a hyponym of struggle; that is, war is a word with a more specific, narrower meaning than struggle:

struggle (noun)	war (noun)
strenuous effort	the waging of armed conflict against an enemy
an energetic attempt to achieve something	a concerted campaign to end something that is injurious
an open clash between two opposing groups (or individuals)	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

struggle (verb)	war (verb)
be engaged in a fight; carry on a fight	make or wage war
to exert strenuous effort against opposition
climb awkwardly, as if by scrambling
make a strenuous or labored effort