The English language has no special term for the cousin of a cousin. Either that person is related to you, and so is describable by that direct relationship as some sort of cousin (or a sibling), or is not related to you.
The first cousins of your father and mother are your first cousins, once removed.
Your grandfather's first cousin is your first cousin twice removed (which means two generations removed).
Niece or Nephew
Second cousins
One of her cousins are called Ellie Cosgrove.
The Cornish Cousins
Your uncle or aunt's children are called your cousins.
To your mother, they are first cousins once removed. To you they are second cousins.
Louis doesn't have any cousins.
One of his cousins are Donald Dwight
Cousins are the children of of both your parent's siblings (your aunts or uncles.)
emir
GOPHER
They are your cousins.
Cousins