Does grandpa mean grandpa?

Grandpa, of course, refers to grandpa, grandpa is a daily spoken language in the northern region, and both grandpa and grandpa refer to his mother's father; Grandfather is the daily spoken language in the south, and it also refers to the mother's father. So grandpa actually refers to grandpa, but because of different regions, so the name is different. The words written more about the mother's father are actually grandfathers.