Here we have Grandpa and Grandma and Aunt and Uncle. I’ll ask Lill for more information. It’s interesting, in Swedish there is a different word for your grandparents on your mother’s side and on your father’s side so it’s more clear about whom you are speaking.
So here it is:
Mormor och Morfar are my Mom’s parents. MomMom, MomDad
Farmor och Farfar are my Far’s parents. DadMom, DadDad