Where does “卡昂” come from?

卡昂 (Chinese) comes from French Caen, from Proto-Celtic kagyom, from Proto-Indo-European kagʰyóm, from Proto-Indo-European -yós — Creates adjectives from noun or verb stems.

Ancestry of “卡昂”, step by step

StepLanguageWordMeaning
1FrenchCaen—
2Proto-Celtickagyompen, enclosure
3Proto-Indo-Europeankagʰyómenclosure, hedge
4Proto-Indo-European-yósCreates adjectives from noun or verb stems
Every word from Proto-Indo-European -yós →Every word from Proto-Indo-European kagʰyóm →Every word from Proto-Celtic kagyom →