knickers -- panties
arse -- ass
What I find interesting is the large number of differences in transportation related items: boot/trunk, motorway/highway, car park/parking lot and on and on.
Still, it's all proof that English remains an ever evolving language. As dem frogs are always saying, Vive la difference.
![glasses8](https://static.lushstories.com/emoticons/lush/forum/glasses10.gif)