* Ìyá agba: This is the most common and general term for grandmother. It literally means "old mother".
* Ìyá ìyá: This translates to "mother of mother" and emphasizes the lineage. It's a more formal and respectful term.
* Baba Ìyá: This translates to "father's mother" and specifically refers to the grandmother from the father's side.
* Ìyá Baba: This translates to "mother's mother" and specifically refers to the grandmother from the mother's side.
So, depending on the context and the relationship you want to express, you can choose the appropriate term.