The term quiet rage used two words that have opposite meanings. Other examples of such expressions would be open secret, original copy, larger half etc. Think of two more such expressions.

Two more of such expressions are:

- cold flame;

- bright darkness.

Explanation:

Phrases in which the words have opposite, contrasting meanings are examples of oxymorons. Oxymorons are often used as a way to emphasize an idea or concept. Usually, when looking at each word individually, the difference in meaning between them is astonishing. However, in context, they tend to make sense together, conveying the author's ideas in an interesting way. Two more of such expressions are:

- cold flame;

- bright darkness.

the answer would be verifiable facts