Let's talk about Grandmothers

Seth calls me Grandma and he calls Curtis Grandpa. That was our choice. I like the sound of it. My kids and my siblings' kids call my mom, Grandma, too. My dad was also grandpa. When I was growing up, my grandparents were grandma and grandpa. My nieces and nephews call their other grandparents by an assortment of many names. My sister, Kathy married into a Hispanic family and her kids call their grandparents Ito and Ita which is the shortened version of Abuelito and Abuelita. My brother Albert's kids call theirs Nanny and PawPaw. Theresa's kids call their great grandmother, Granny. When Seth was born, my mother wanted him to call her something different than Grandma. She chose Busha. She is Polish. Busha is what she called her grandmother. I looked up Grandmother in Polish and is spelled Babcia. What did you call your grandparents? How did the name get chosen?