OXYMORON- Rhetorical figure in which congruous or contradictory terms are combined.

Just after Tybalts death, Juliet becomes a geyser of oxymorons:

Did euer Dragon keepe so faire a Caue? Beautifull Tyrant, fiend Angelicall: Rauenous Doue-feather'd Rauen, Woluïsh-rauening Lambe, Dispised substance of Diuinest show: Iust opposite to what thou iustly seem'st, A dimne Saint, an Honourable Villaine: O Nature! what had'st thou to doe in hell, When thou did'st bower the spirit of a fiend In mortall paradise of such sweet flesh? Was euer booke containing such vile matter So fairely bound? O that deceit should dwell In such a gorgeous Pallace.

-Act 3, Scene 2