Where does “kozienica” come from?

kozienica (Polish) comes from Polish kozina, from Polish Koza, from Proto-Slavic koža, from Proto-Slavic -ja, from Proto-Indo-European -yeh₂.

Ancestry of “kozienica”, step by step

StepLanguageWordMeaning
1Polishkozinagoatmeat, chevon
2PolishKozagoat
3Proto-Slavickožaskin; leather
4Proto-Slavic-jaSuffix creating feminine action nouns, usually...
5Proto-Indo-European-yeh₂—
Every word from Proto-Indo-European -yeh₂ →Every word from Proto-Slavic -ja →Every word from Proto-Slavic koža →