Where does “Білоцерківщина” come from?

Білоцерківщина (Ukrainian) comes from Ukrainian Бі́ла Це́рква, from Ukrainian це́рква, from Proto-Slavic cьrky, from Old High German kirihha, from Proto-West Germanic kirikā, from Ancient Greek κυριακόν, from Ancient Greek Κύριος, from Proto-Hellenic *kúrios — lord, master.

Ancestry of “Білоцерківщина”, step by step

StepLanguageWordMeaning
1UkrainianБі́ла Це́рква—
2Ukrainianце́ркваchurch
3Proto-Slaviccьrkychurch
4Old High Germankirihhachurch
5Proto-West Germanickirikāchurch
6Ancient Greekκυριακόνchurch
7Ancient GreekΚύριοςLord
8Proto-Hellenic*kúrioslord, master
Every word from Proto-Hellenic *kúrios →Every word from Ancient Greek Κύριος →Every word from Ancient Greek κυριακόν →