As nouns the difference between armory and tannery
is that armory is while tannery is a place where people tan hides to make leather.
armory
English
Noun
(armories)
Derived terms
* armorer
* armorial
tannery
English
Noun
(tanneries)
A place where people tan hides to make leather.
(uncountable) The business of a tanner.
Related terms
* tanner
* tan