See the entire entry for ˀaḇdālā, ˀaḇdāltā v.n.C Havdalah ceremony

BTŠab 69b(35) :וההוא יומא במאי מינכר לה בקידושא ואבדלתא : by what is that day [i.e. the Sabbath] distinguishable? By qidduš and havdala

See the entire entry for nkr vb. to be distinct, other; D to repudiate; C to recognize