bastion vs munition

bastion and munition both are nouns.

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

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

bastion: projecting part of a rampart or other fortification
munition: defensive structure consisting of walls or mounds built around a stronghold to strengthen it

Other hypernyms of bastion include fortification.

bastion (noun)	munition (noun)
projecting part of a rampart or other fortification	weapons considered collectively
a stronghold into which people could go for shelter during a battle	defensive structure consisting of walls or mounds built around a stronghold to strengthen it
a group that defends a principle	military supplies

bastion (verb)	munition (verb)
	supply with weapons