Esther 9:27 says:
על כן קראו לימים האלה פורים על שם הפור
"Therefore, they called these days (14 and 15 of Adar) "Purim" to commemorate the poor."
Why should the name "Purim" be limited to just those two days of the year? Isn't there a mitzvah to give tzedaka / assist the poor each day? Shouldn't we commemorate the poor, daily, so every day should be called "Purim"?