apophasis vs rhetorical device

apophasis and rhetorical device both are nouns.

Word	Noun	Adjective	Verb	Adverb
apophasis	Yes	No	No	No
rhetorical device	Yes	No	No	No

As nouns, rhetorical device is a hypernym of apophasis; that is, rhetorical device is a word with a broader meaning than apophasis:

apophasis: mentioning something by saying it will not be mentioned
rhetorical device: a use of language that creates a literary effect (but often without regard for literal significance)

apophasis (noun)	rhetorical device (noun)
mentioning something by saying it will not be mentioned	a use of language that creates a literary effect (but often without regard for literal significance)