It is a Palindrome. A Palindrome is a phrase or word that reads the same from left to right as it does from right to left. eg.
There is a finnish word meaning the result from a measurement laboratory of tomatoes, "SOLUTOMAATTIMITTAAMOTULOS" which is a palindrome!
An Oxymoron on the other hand, is a phrase that is paradoxical. It usually accors with a phase made up of an adjective then noun. Examples:
Or it can be an adverb - noun phrase eg.
It is usually used to emphasize hypocrisy, incongruities or the complex nature of reality.