What is an example of onomatopoeia and an example of an oxymoron in 1984?

Using the
Centennial Edition, an exmaple ofis found on pg. 228.

There was a long, rolling clang, as though the washtub had been
flung across the yard, and a confusion of angry shouts which ended in a yell of pain.

As for , the word blackwhite is perhaps the
clearest example. Since an oxymoron is a two-word, it is a word which seems to be...