Opposites in the Megillah
The megillah contains a number of phrases that can be thought of as opposites or parallels of each other. For example,
וְהָעִיר שׁוּשָׁן נָבוֹכָה (ג:ט"ו) - The city of Shushan was confused
וְהָעִיר שׁוּשָׁן צָהֲלָה וְשָׂמֵחָה (ח:ט"ו) - The city of Shushan was happy
Find some of your own and share them! There are quite a few.