Connective, disjunctive and adversative conjunctions

Disjunctive conjunctions set one of the linked parts apart from the other. They give two kinds of meaning. The first is choice: only one of the parts happens (yo, yoki, yo ... yo): Yo bugun boramiz, yo ertaga (Either we go today or tomorrow). The second is alternation: actions or states take turns (goh ... goh, dam ... dam, ba’zan ... ba’zan, bir ... bir): Dam shamol esadi, dam tinchiydi (Now the wind blows, now it calms down). A comma is put before the second part of a repeated disjunctive conjunction. But no comma is put between homogeneous members joined by a single “yoki”: qalam yoki ruchka (a pencil or a pen).