This question is incomplete. Anyway, I will give you an explanation with an example for you to understand each of these literary devices.
Explanation:
Alliteration is an expressive device that consists of the notorious repetition of the same or the same sounds, especially consonants, in a sentence. Example: Peter Piper picked a peck of pickled peppers.
An oxymoron is a word or expression that has been formed by combining two terms of opposite meaning. Example: Amazingly awful.
The allusion is a linguistic device (rhetorical figure) that refers to something without mentioning it directly. Example: She felt like was on the moon.
Repetition is a group of rhetorical figures that consists of the repetition of words or other expressive resources. Example: Time after time.
