military vs peacekeeper

military and peacekeeper both are nouns.

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

military (noun)	peacekeeper (noun)
the military forces of a nation	the pistol of a law officer in the old West
	someone who keeps peace
	a member of a military force that is assigned (often with international sanction) to preserve peace in a trouble area

military (adjective)	peacekeeper (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