Where does “Pontus” come from?

Pontus (Swedish) comes from French ponce, from Latin pumex, from Proto-Indo-European (s)poH(y)-, from Proto-Indo-European speh₁- — to succeed, to prosper.

Ancestry of “Pontus”, step by step

StepLanguageWordMeaning
1Frenchponcepumice; hot alcoholic beverage made with gin or...
2Latinpumexa pumice stone; pumice; any porous rock
3Proto-Indo-European(s)poH(y)-foam
4Proto-Indo-Europeanspeh₁-to succeed, to prosper
Every word from Proto-Indo-European speh₁-Every word from Proto-Indo-European (s)poH(y)-Every word from Latin pumex