biological warfare defense vs BW defense

biological warfare defense and BW defense both are nouns.

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

As nouns, biological warfare defense and BW defense are synonyms defined as:

biological warfare defense and BW defense: defense against biological warfare

Other synonyms of biological warfare defense include biological warfare defence, BW defence.

biological warfare defense (noun)	BW defense (noun)
defense against biological warfare	defense against biological warfare