Second cousins once removed.
Your daughter and your first cousin are first cousins, once removed.
Second cousins once removed.
Your great aunt's daughter's children (her grandchildren) are your second cousins.
Your daughter and your first cousin's children are second cousins to each others.
Your first cousin's daughter and you are first cousins, once removed. Your first cousin's children and your children will be second cousins to each other.
Your children and the children of your first cousin are second cousins to each other.
cousins
Cousins?
Your niece and your daughter are first cousins. Your daughter and the daughter of your niece are first Cousins, once removed.
I think the kids would be second cousins
If you have two nieces who are not sisters but are each the daughters of your siblings, the two nieces are first cousins. If they each have a daughter, those daughters are second cousins to each other.
I think the kids would be second cousins