belt ammunition vs ammunition

belt ammunition and ammunition both are nouns.

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

As nouns, ammunition is a hypernym of belt ammunition; that is, ammunition is a word with a broader meaning than belt ammunition:

belt ammunition: ammunition (usually of small caliber) loaded in flexible linked strips for use in a machine gun
ammunition: projectiles to be fired from a gun

Other hypernyms of belt ammunition include ammo.

belt ammunition (noun)	ammunition (noun)
ammunition (usually of small caliber) loaded in flexible linked strips for use in a machine gun	projectiles to be fired from a gun
	information that can be used to attack or defend a claim or argument or viewpoint
	any nuclear or chemical or biological material that can be used as a weapon of mass destruction