I found in Germany fuel economy was measured in the amount of fuel used to go one km vs in the US we measure how many miles you can get out of one gallon. It's interesting, same ratio, just using a different base.
Not helped by the US gallon bizarrely being a smaller measurement than the Imperial gallon.
For the longest time I thought executor was two different words, like how the imperial officers pronounce Lord Vader's ship on Star Wars as Exec-u-tor, vs someone who chops off heads is an ex-acute-or. Then I realized it's the exact same word with a different pronunciation in Britain.
That's because an executor is someone who does something and an executioner is one who chops off people's heads.