operational vs military

operational is not a noun while military is a noun.

Word	Noun	Adjective	Verb	Adverb
operational	No	Yes	No	No
military	Yes	Yes	No	No

operational (noun)	military (noun)
	the military forces of a nation

operational (adjective)	military (adjective)
(military) of or intended for or involved in military operations	associated with or performed by members of the armed services as contrasted with civilians
pertaining to a process or series of actions for achieving a result	characteristic of or associated with soldiers or the military
being in effect or operation	of or relating to the study of the principles of warfare
fit or ready for use or service