war vs armed forces

war and armed forces both are nouns.

Word	Noun	Adjective	Verb	Adverb
war	Yes	No	Yes	No
armed forces	Yes	No	No	No

war (noun)	armed forces (noun)
the waging of armed conflict against an enemy	the military forces of a nation
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)	armed forces (verb)
make or wage war