Is there any rule as to when ra is a tap or when it's rolled (as in the single and double r in Spanish, respectively)? I tend to roll the ra when there are two together, as in har-roz or kharraaTaa. But sometimes it comes out rolled even in other cases, but Hindi isn't my native language (Tamil/English are). Does the rolling of ra not affect meaning as it does in Spanish (pero vs perro, caro vs carro, etc)? In Tamil and I think in Marathi (ra with bindu) there are separate characters for single and double ra, but not in Hindi.