oxymoron

An oxymoron is a figure of speech in which apparently contradictory or opposing terms appear in conjuction. The common oxymoron phrase is a combination of an adjective proceeded by a noun with contrasting meanings. They may be used to empahsize a certain phrase, or to create a verbally puzzling, and therefore enganging effect.

Some examples of oxymoron, such as, but not limited to, are:

Only choice, cold sweat, grounders in space, slow burn, painfully beautiful, sweet agony, amongst others.

The examples above were taken from a romantic context, more concretely fromThe 100, when Clarke and Bellamy tacitly professed their love for each other, but there are tons of more examples.