At the very very very beginning. Like ancient times😆 We used to call them RaKa. (wow sounds like some bhai name) Then it was always between Ranya and Rankan. I think I like both Ranya and Rankan, but I use Rankan more often. It has a chime to it. (in my opinion sounds like chaan chaan. You know chaan chaan choodiyan)
But what do you use? or like more?