this is really weird but I´ll try to best explain..(translation/meaning wise.. not weird as cataholic´s case..lol.. no offense just I found it fun )

the formal way is grandmother/ grandfather (abuela/abuelo) but I ´ve never liked that so i always went with a diminutive more cute way Grandma(only had one) (abuelita).. and now you wonder what about grandpas.. well.. one was Tata (a kind of mexican form of Papaw) and the other one was Yeyo (it was a morph from abuelo mispronounced.. turned into ayeyo.. then finalized as Yeyo)

now for my kids grandparents.. on hubby´s side they are grandma/grandpa or the grannies (abues)

and for my side they are Tito and Tita.. short for abuelita haha.. more like abuelitita.. an even smaller diminutive..lol.. this one stuck because the person that helps my mom with the cleaning referred to them like that to my kid and stuck.. they all love it though