munition vs ammunition

munition and ammunition both are nouns.

Word	Noun	Adjective	Verb	Adverb
munition	Yes	No	Yes	No
ammunition	Yes	No	No	No

As nouns, ammunition is a hyponym of munition; that is, ammunition is a word with a more specific, narrower meaning than munition:

Other hyponyms of munition include ammo, armament, bomb, defence system, defense system, gunnery, hardware, naval weaponry.

munition (noun)	ammunition (noun)
weapons considered collectively	projectiles to be fired from a gun
defensive structure consisting of walls or mounds built around a stronghold to strengthen it	information that can be used to attack or defend a claim or argument or viewpoint
military supplies	any nuclear or chemical or biological material that can be used as a weapon of mass destruction

munition (verb)	ammunition (verb)
supply with weapons