How To Understand Relationships In Your Family Tree Genealogy

Such as child, grandchild, great grandchild, great great grandchild.

Again, it may be child, grandchild, great grandchild, great great grandchild.

Your relationship to your cousin’s child is “first cousin once removed”, because you added one generation to the relationship. However, the relationship between your child and your first-cousin-once-removed would be “second cousin”, because they are both great-grandchildren of a common ancestor.