Some terms of endearment for Mother is....
Mama - Mom - Mommy -
Dad - Mom - Mommy -
Grandma - Mom - Mommy -
My Dad's Father is my....
Dad
Mom
Grandpa
The term of endearment for Grandfather is
Grandma
Grandson
My Mom's Mom is my...
Aunt
My Grandma's Daughter is my...
Auntie
Granddaughter