military vs peacekeeping mission

military and peacekeeping mission both are nouns.

Word	Noun	Adjective	Verb	Adverb
military	Yes	Yes	No	No
peacekeeping mission	Yes	No	No	No

military (noun)	peacekeeping mission (noun)
the military forces of a nation	the activity of keeping the peace by military forces (especially when international military forces enforce a truce between hostile groups or nations)

military (adjective)	peacekeeping mission (adjective)
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