Want this question answered?
Grandfather, grandad, grandpa..depends on the person
You call people living in Australia, Australians.
할아버지 (Hara buhjee)
people
Australia
My Grandfathers birthday was on October 30th
Your father's grandfather is your great grandfather.
Your grandfather's brother is your great uncle.
In Pakistan most of people call their grandfathers as "Dada". This is common word and every single Pakistani is familiar with it.
He would be your great great uncle, but you could call him whatever endearing name you both prefer. my great grandfathers brother or my great uncle
Aussies or Australians.
Two people whose grandfathers were brothers are second cousins to each other.