oration vs oratory

oration and oratory both are nouns.

Word	Noun	Adjective	Verb	Adverb
oration	Yes	No	No	No
oratory	Yes	No	No	No

As nouns, oratory is a hypernym of oration; that is, oratory is a word with a broader meaning than oration:

oration: an instance of oratory
oratory: addressing an audience formally (usually a long and rhetorical address and often pompous)

oration (noun)	oratory (noun)
an instance of oratory	addressing an audience formally (usually a long and rhetorical address and often pompous)