What is the correct term for a relationship between cousins.?

Question:

What is the correct term for a relationship between cousins.?

My husbands cousin just had a baby and we have children as well so we want to know what the correct term is for the relationship between my children and my husbands cousins children. and what is the relationship term that my husban would be to his cousin's baby and if you could also explain your answer that would be great thank you.

Additional Details

8 months ago
It is my husband's moms sisters son that had a baby. so my husbands aunts son had a baby and we want to know what the relationship would be between the baby and my husbands children.

Best Answer - Chosen by Asker: 8 months ago
It is my husband's moms sisters son that had a baby. so my husbands aunts son had a baby and we want to know what the relationship would be between the baby and my husbands children.