WHAT LITERARY DEVICE: "foul words is but foul wind, & foul wind is but foul breath, &

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foul breath is noisome"? "foul words is but foul wind, & foul wind is but foul breath, & foul breath is noisome, therefore i will depart unkissed"
shakespeare, much ado about nothing :P
like is it pun, oxymoron, etc THANKS!