parapet vs munition

parapet and munition both are nouns.

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

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

parapet: fortification consisting of a low wall
munition: defensive structure consisting of walls or mounds built around a stronghold to strengthen it

Other hypernyms of parapet include fortification.

parapet (noun)	munition (noun)
fortification consisting of a low wall	weapons considered collectively
a low wall along the edge of a roof or balcony	defensive structure consisting of walls or mounds built around a stronghold to strengthen it
	military supplies

parapet (verb)	munition (verb)
	supply with weapons