license
US /ˈlaɪ.səns/
UK /ˈlaɪ.səns/

1.
a permit from an authority to own or use something, do a particular thing, or carry on a trade
:
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You need a valid driver's license to operate a car.
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The restaurant operates under a food service license.
2.
freedom to act or speak as one wishes
:
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The artist took poetic license with the historical facts.
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He was given full license to make decisions.