Where does “końcyzna” come from?

końcyzna (Polish) comes from Polish koniec, from Old Polish koniec, from Proto-Slavic konьcь, from Proto-Slavic konъ, from Proto-Slavic čęti — to begin.

Ancestry of “końcyzna”, step by step

StepLanguageWordMeaning
1Polishkoniecfinish, end
2Old Polishkoniecend
3Proto-Slavickonьcьend; thread, string
4Proto-Slavickonъbeginning; end
5Proto-Slavicčętito begin
Every word from Proto-Slavic čęti →Every word from Proto-Slavic konъ →Every word from Proto-Slavic konьcь →