BW vs warfare

BW and warfare both are nouns.

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

As nouns, warfare is a hypernym of BW; that is, warfare is a word with a broader meaning than BW:

Other hypernyms of BW include war.

BW (noun)	warfare (noun)
the use of bacteria or viruses or toxins to destroy men and animals or food	the waging of armed conflict against an enemy
	an active struggle between competing entities