Idk if this can help you but it looks like something you might be looking for.
This is a literary technique known as conceit.
A conceit<span> is a kind of metaphor that compares two very different things in a remarkable and smart way. In this poem, the two opposing forces are light and darkness. But still, the author was able to equate them together in a surprising way to relate them both to the theme of beauty.</span>
I'm pretty sure it's A. some
