Juxtaposition is placing two elements or words side by side and letting the reader or viewer compare them. This act compares and contrasts the two elements and can show irony, humor or sadness.
It was the best of times, it was the worst of times, it was the age of wisdom, it was the age of foolishness, it was the epoch of belief, it was the epoch of incredulity, it was the season of Light, it was the season of Darkness - A Tales of Two Cities by Charles Dickens
Curse, bless, me now with your fierce tears, I pray. / Do not go gentle into that good night. / Rage, rage against the dying of the light. - Do not Go Gentle into that Good Night by Dylan Thomas
O, she doth teach the torches to burn bright! / It seems she hangs upon the cheek of night; Like a rich jewel in an Ethiope’s ear- Romeo and Juliet by William ShakespeareMerry and tragical? Tedious and brief?; That is hot ice, and wondrous strange snow!; How shall we find the concord of this discord? - A Midsummer Night’s Dream by William Shakespeare
I thoroughly hate loving you. Your heart is a perfectly-carved stone; Set deep into your chest, soft as granite. I grip you gently with angels' claws; Icy breath scorching your warm, shivering skin. Your hard topaz eyes shimmer liquidly; - Author unknown
You will soon be asked to do great violence in the cause of good. - The Yellow Birds by Kevin Powers
Reviewing juxtaposition examples shows how two words or elements or concepts can be compared to see how they are similar or how they differ.