war vs warfare

war and warfare both are nouns.

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

As nouns, war and warfare are synonyms defined as:

As nouns, war and warfare are synonyms defined as:

war (noun)	warfare (noun)
the waging of armed conflict against an enemy	the waging of armed conflict against an enemy
a concerted campaign to end something that is injurious	an active struggle between competing entities
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)	warfare (verb)
make or wage war