armed forces vs effective

armed forces is a noun but effective is not a noun.

Word	Noun	Adjective	Verb	Adverb
armed forces	Yes	No	No	No
effective	No	Yes	No	No

armed forces (noun)	effective (noun)
the military forces of a nation

armed forces (adjective)	effective (adjective)
	producing or capable of producing an intended result or having a striking effect
	existing in fact; not theoretical; real
	able to accomplish a purpose; functioning effectively
	works well as a means or remedy
	ready for service
	exerting force or influence