different between unmask vs uncask

English

From un- +? mask.

unmask (third-person singular simple present unmasks, present participle unmasking, simple past and past participle unmasked)

(transitive) To remove a mask from someone.
(transitive) To expose, or reveal the true character of someone.
(intransitive) To remove one's mask.
(transitive, computing) To enable (an interrupt, etc.) by unsetting or setting the associated bit.

un- +? cask

uncask (third-person singular simple present uncasks, present participle uncasking, simple past and past participle uncasked)

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