It’s not a complete sentence, so fragment i’m pretty sure
Not an oxymoron, because that is when you juxtapose 2 opposites. "Stupid genius"
Not onomatopoeia, because that is using the sound something makes to describe it. "buzz of a bee"
Not analogy, because that us a comparison between two things to explain. "an orange is like a mango, just different"
A refrain is the repetition of certain lines, like a chorus.
A gerund is a verb functioning as a noun. In this case, the gerund is "band-aid" and it is the direct object of the sentence, where "on the cut" is the phrase of the indirect object, which is the "cut". Hope this helps!
Answer: Band-aid, functions as the direct object