armory vs armoury

armory and armoury both are nouns.

Word	Noun	Adjective	Verb	Adverb
armory	Yes	No	No	No
armoury	Yes	No	No	No

As nouns, armory and armoury are synonyms defined as:

Other synonyms of armory include arsenal.

As nouns, armory and armoury are synonyms defined as:

armory and armoury: a military structure where arms and ammunition and other military equipment are stored and training is given in the use of arms

Other synonyms of armory include arsenal.

As nouns, armory and armoury are synonyms defined as:

Other synonyms of armory include arsenal.

As nouns, armory and armoury are synonyms defined as:

Other synonyms of armory include inventory.

armory (noun)	armoury (noun)
a place where arms are manufactured	a place where arms are manufactured
a military structure where arms and ammunition and other military equipment are stored and training is given in the use of arms	a military structure where arms and ammunition and other military equipment are stored and training is given in the use of arms
all the weapons and equipment that a country has	all the weapons and equipment that a country has
a collection of resources	a collection of resources