Figure of speech which is apparently contradictory terms appear in a conjunction?

The figure of speech that uses contradictory terms in a conjunction is called oxymoron.

Here are some examples:

* Living dead

* Pretty ugly

* Bitter sweet

* Deafening silence

* Jumbo shrimp

Oxymorons create a paradoxical effect, making the reader pause and consider the meaning of the words. They can be used for humor, emphasis, or to create a sense of irony or contradiction.