The imagery of light and darkness in this poem, which stems from the theme of beauty, is a literacy technique known as. alliteration, conceit, metaphor or enjambment?

This is a literary technique known as conceit.

A conceit 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.

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