"Grandfather" and "Grandmother" in Engpsh. The origin of these words come from the old Engpsh word "grand" meaning "elderly" or "respectful" and "father" and "mother" respectively.
Examples:
My grandfather is a retired doctor.
我的爷爷是一位退休的医生。
I visit my grandmother every Sunday.
我每周日都去看望我的奶奶。
My grandparents pve in a small village.
我的祖父母住在一个小村庄里。