hornwork vs munition

hornwork and munition both are nouns.

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

As nouns, munition is a hypernym of hornwork; that is, munition is a word with a broader meaning than hornwork:

hornwork: an element of the trace italienne system of fortification that consists of a pair of demi-bastions.
munition: defensive structure consisting of walls or mounds built around a stronghold to strengthen it

Other hypernyms of hornwork include fortification.

hornwork (noun)	munition (noun)
an element of the trace italienne system of fortification that consists of a pair of demi-bastions.	weapons considered collectively
	defensive structure consisting of walls or mounds built around a stronghold to strengthen it
	military supplies

hornwork (verb)	munition (verb)
	supply with weapons