You and your second cousin's child are second cousins once removed to each other.
They are 2nd cousins.
Your son and your 1st cousin's child are 2nd cousins.
Children of your first cousins, are your first cousins once removed.
you and your cousin's children are 2nd cousins. ^^^ This answer is incorrect. your cousin's child would be your first cousin, once removed. (removed meaning a different generation.) Your second cousins share the same great-grandparents, but not the same grandparents. For example, your mother's cousin's child would be your second cousin.
Your child and your first cousin's child are second cousins. Your child and your second cousin's child are third cousins. It gets more complicated if you are talking about the child of a first or second cousins, etc, once removed or twice removed, etc.
uh you dumb people you mom's cousin's child is your cousin too my mom told me that
Your first cousin's child would be your second cousin
The son of your father's first cousin is your 2nd cousin. The son of your father's 2nd cousin in your 3rd cousin.
The children of your mother's first cousins are your second cousins. The children of your mother's second cousins are your third cousins. The children of your mother's third cousins are your fourth cousins. And so forth.
Your niece and your child are first cousins. Your niece's child and your child are first cousins, once removed. The children of your niece's child and of your child are second cousins to each other.
Your cousins child is your first cousin once removed.
A person's grandchild and grand niece are 2nd cousins to each other.