This UK vs. Great Britain chart explains the reasons for which these two categories often get mixed up.
Going into great detail about the reasons for these labels and what they mean today, the infographic uses a multitude of data visualization graphics and makes its point loud and clear. The title of the chart is particularly well-designed, as it references the ever-popular 'Keep Calm and Carry On' poster.
Though the history explored in this piece is quite complex, it does make some facts very clear. For instance, most inhabitants of the United Kingdom are British, but are not exclusively British. It also provides practical information by warning that calling someone from Wales or Scotland a Brit would not go over well.