Oxymoron is a kind of juxtaposition where the author puts the opposite meaning of two words side by side, and this is done to create a particular element of irony.
For example, the phrase “deafening silence” is an oxymoron, just as “love-hate” is an oxymoron as well. An oxymoron is when someone presents an idea that contrasts what the first word in the phrase says.
Juxtaposition, on the other hand, is a figure of speech used to place abstract concepts close to each other in composition, which allows the reader to create their meaning. These are words that, while contradictory, are not always placed side by side. For example, “It was the best of times, it was the worst of times,” said Charles Dickens, is a juxtaposition.