What is the difference between 'overlook' and 'oversee'?

[zagor]

Test No. incompl/advan-4 "Newspaper Headlines", question 4

The boss was good enough to ......... my mistake.

(a) oversee
(b) overtake
(c) overdo
(d) overlook

Test No. incompl/advan-4 "Newspaper Headlines", answer 4

The boss was good enough to overlook my mistake.

Correct answer: (d) overlook

Your answer was: incorrect
The boss was good enough to oversee my mistake.
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since you explained that overlook means "fail to notice", how come the correct answer is overlook. So, meaning of sentence will be "Boss is fail to notice the staff's mistake"

[Torsten]

As explained in a previous answer, to overlook also means to excuse.
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