biological weapon vs bioweapon

biological weapon and bioweapon both are nouns.

Word	Noun	Adjective	Verb	Adverb
biological weapon	Yes	No	No	No
bioweapon	Yes	No	No	No

As nouns, biological weapon and bioweapon are synonyms defined as:

biological weapon and bioweapon: any weapon usable in biological warfare

Other synonyms of biological weapon include bioarm.

biological weapon (noun)	bioweapon (noun)
any weapon usable in biological warfare	any weapon usable in biological warfare