Where does “Karşıyaka” come from?

Karşıyaka (Turkish) comes from Turkish yaka, from Ottoman Turkish یاقه, from Proto-Turkic jaka — collar; edge; edge; collar; collar.

Ancestry of “Karşıyaka”, step by step

Karşıyaka traces back through two separate lines of ancestry.

via Turkish yaka

StepLanguageWordMeaning
1Turkishyakacollar; side
2Ottoman Turkishیاقهcollar of a garment
3Proto-Turkicjakacollar; edge; edge; collar; collar

via Turkish karşı

StepLanguageWordMeaning
1Turkishkarşıopposite; against; the opposite place or side;...
Every word from Proto-Turkic jaka →Every word from Ottoman Turkish یاقه →Every word from Turkish yaka →