Can anyone please explain what box and whisker plots is?

I am using Jupyter notebook but I do not know what box and whisker plot is.

I want to know what it is and what its function is.

If you could, I would like to know what histogram(the visualisation below) is as well.

I am a uni student and am new to this kind of field so I want to understand what those visualisations are.

Thank you in advance. 

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