A when a set of 2 siblings marries another set of 2 siblings and the have kids thats what the kids are to each other. Basicly if cousins share both sets of grandparents. Also called double cousins.
If a women marries a men and then the women's sister and the men's brother also get married and they both have a kid those kid would be couslings.
When cousins shared both sets of grandparents. Like if a woman married a man and then the woman's sister and the man's brother also got married and then both couples had a kids, the kids would be couslings. Also called double cousins.
This is my cousling because our mom's are sisters and our dad's are brothers.