Question
how to understand it properly what is this?
Answer
ב"ה
Shalom
My assumption is that you are referring to "zivug", which in the context of the Talmud simply means a "pair" of husband and wife. See Sotah 2a, where the Gemara says that 40 days before the embryo is formed a "Bat Kol" announces the daughter of so and so is destined to marry so and so...
All the best.
