armoury vs arsenal

armoury and arsenal both are nouns.

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

As nouns, armoury and arsenal are synonyms defined as:

Other synonyms of armoury include armory.

As nouns, armoury and arsenal are synonyms defined as:

armoury and arsenal: 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 armoury include armory.

As nouns, armoury and arsenal are synonyms defined as:

Other synonyms of armoury include armory.

armoury (noun)	arsenal (noun)
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	a place where arms are manufactured
all the weapons and equipment that a country has	all the weapons and equipment that a country has
a collection of resources