Merriam's online dictionary describe oxymoron as "the deliberate juxtaposing of seemingly contradictory words." Some of the examples given there, however, don't appear to be deliberate:
"The phrase 'Broadway rock musical' is an oxymoron. Broadway doesn't have the nerve to let the really hard stuff in the house."
I would argue that "Broadway rock musical" isn't an oxymoron, because the term was not meant to be one. If I am correct, and we are to take the word "deliberate" seriously as an element of oxymoron, what do we do call Thurber's "naive domestic Burgundy"? Is it just a "contradiction in terms," or is there a nice Greek word for it?