In every family, besides their given name, we all have different kinship titles that we refer to our relatives as. It varies in every family and often times from person to person within an individual family.
Here are some of the ones that appear in my family and more than likely some of yours.
Father-Dad, Daddy, Father, Pa, Papa, Paw-Paw, Big Daddy, Papere, sir
Mother-Mama, Mother, Ma, Mommy, Madear, Mammie, Mom, Mamere, Big Mama, mum, mame, moms, mummy, Mimi
Sister-Sis, Sister, Sissy, Sistah
Brother-Bro, Brother, Bubba, Bruh
Aunt-Auntie, Aunt, Ant, Ain't, Tia
Uncle-Unc, Uncle, Theo
Grandmother-Grandma, Grandmother, Grandmama, Granny, Big Mama, Grandmom, Grandmommie, Nana, Nanna, Uma, Mimi, grammy
Grandfather-Grandpa, Gramps, Grandfather, Grandpa, Big Daddy, Big Papa, Grandpapa, Granddad, Grand-daddy
If you have some others, let me know.