warfare vs combat

warfare and combat both are nouns.

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

warfare (noun)	combat (noun)
the waging of armed conflict against an enemy	an engagement fought between two military forces
an active struggle between competing entities	the act of fighting; any contest or struggle

warfare (verb)	combat (verb)
	battle or contend against in or as if in a battle