Your children and your first cousin's children are second cousins.
First Cousin, twice removed.
If you are first cousins, they would be a first cousin once removed.
You and the children of your first cousin are first cousins, once removed, to each other. Your children and the children of your first cousin are second cousins to each other.
Your daughter is first cousin once removed to your cousin. Your daughter is second cousin to your cousin's children. Your cousin's children are first cousins once removed to you
Your children and your first cousin are first cousins, once removed, to each other. Your children and your first cousin's children are second cousins to each other.
The children of your grandmother's first cousin are your second cousins, once removed.
Any child of your first cousin, is your "first cousin once removed". Indicating they are 1 generation from being your first cousin. Your children & the children of your first cousin would be "second cousins".
The children of your wife's first cousin are her first cousins, once removed. They are not related to you.
Any child of your first cousin, is your "first cousin once removed". Indicating they are 1 generation from being your first cousin. Your children & the children of your first cousin would be "second cousins".
Your children and your first cousin's children are second cousins.
First cousins once removed.
First cousins once removed.