peacekeeper vs handgun

peacekeeper and handgun both are nouns.

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

As nouns, handgun is a hypernym of peacekeeper; that is, handgun is a word with a broader meaning than peacekeeper:

Other hypernyms of peacekeeper include pistol, shooting iron, side arm.

peacekeeper (noun)	handgun (noun)
the pistol of a law officer in the old West	a firearm that is held and fired with one hand
someone who keeps peace
a member of a military force that is assigned (often with international sanction) to preserve peace in a trouble area