Koledari
Koliadari or koliadnyky (Ukrainian: колядники) are Slavic traditional performers of a ceremony called celebration of Koliada, a kind of Christmas caroling. It is associated with Koliada (Calends), a celebration incorporated later into Christmas.
This type of caroling is called kolędowanie (pronounced [kɔlɛndɔˈvaɲɛ] ⓘ) in Poland, koleduvane (коледуване) in Bulgaria, colindat in Romania, koliaduvannia (колядування, pronounced [kolʲɐdʊˈwɑnʲːɐ] ⓘ) in Ukraine, koledování in Czechia and koledarenje (коледарење) or kolede (коледе) in North Macedonia.
In Ukraine caroling may also take place along with a staged play called Vertep.