armed forces vs weapon of mass destruction

armed forces and weapon of mass destruction both are nouns.

Word	Noun	Adjective	Verb	Adverb
armed forces	Yes	No	No	No
weapon of mass destruction	Yes	No	No	No

armed forces (noun)	weapon of mass destruction (noun)
the military forces of a nation	a weapon that kills or injures civilian as well as military personnel (nuclear and chemical and biological weapons)