expeditionary vs military

expeditionary is not a noun while military is a noun.

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

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

expeditionary (adjective)	military (adjective)
(used of military forces) designed for military operations abroad	associated with or performed by members of the armed services as contrasted with civilians
	characteristic of or associated with soldiers or the military
	of or relating to the study of the principles of warfare