-ory1
/əri/suffix
(Forming nouns) denoting a place for a particular function: dormitory repository
Origin
From Latin -oria, -orium, sometimes via Anglo-Norman French -orie, Old French -oire.
-ory2
/əri/suffix
Forming adjectives (and occasionally nouns) relating to or involving a verbal action: compulsory directory mandatory
Origin
From Latin -orius, sometimes via Anglo-Norman French -ori(e).