Yom Kippur like Purim

HH
Many interpretations are given explaining why Yom Kippurim - Ki, means like, it is like Purim, insinuating that it is secondary.

A thought occurred to me that I'm both these days Israel dresses up and tries to play the role of someone else. On Yom Kippur we try to be like angels, and on Purim we dress up and masquerade. Presenting ourselves in a lesser fashion is ultimately a greater and higher enterprise, and therefore Yom Kippur is considered secondary.

Na Nach Nachma Nachman Meuman