Could someone help to tell me the difference of the term "Heads up" and "Hands up"?Thanks.😀

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Both are methods of an action.

Hands up is an 'physical' action to take place.
Heads up is an 'alert' of an action that you should be weary of.

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Hands up -> put your hands up (physically)
Heads up -> Attention to something / be careful.

:)

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Hands up 🙌🏽 
Heads up warning ⚠️

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Heads up: Warning 
So in context when someone says you should have given me a heads up about something they simply mean tell them prior.