ما ترجمة كلمة Oxymoron ؟

هل لها أكثر من معنى؟ و ما معناها في هذه الجملة؟

The subject is 'children's literature', but can the same types and scales of judgement be used as are used for adult literature - and if they are, does that mean that 'children's literature' is inevitably an oxymoron ؟