Naming Chaya and Chaim

Hi,

There was a time in Jewish history when people would use the same name for multiple siblings, we don't do this, because of the problems that would result from confusion between the siblings. However, one may name siblings "Chaim" and "Chaya", as this would not create confusion.

(Rivivot Ephraim 1:109 [this responsum also includes material on the practice of naming for someone who has passed away])

Have a great day,
Mordechai