First cousins once removed. Your child and your nephew are first cousins and there is one generation difference.
Your son/daughter would be cousin to your nephew. Your granddaughter would be second cousin to your nephew.
They are second cousins. Your child and your nephew are first cousins and so their children are second cousins.
They would be second cousins.
Your sister's child and your grandson are first cousins once removed.
Second cousins.
Your niece's child and your grandson's child (your great grandchild) are second cousins, once removed, to each other.
If your daughter-in-law's grandson is a child from a marriage before she married your son, or after their marriage ended, her grandson is not related to you. If he is a child of the marriage between your son and your daughter-in-law, then he is your great grandson.
Your grandson is the great-nephew of your brother.
Your niece's child and your grandson's child (your great grandchild) are second cousins, once removed, to each other.
Sequence of relatonship:Your uncle is a sibling of one of your parentsHis child is your 1st cousinHis grandson is your 1st cousin once removedHis great grandson is your 1st cousin twice removed
Cousins
Your grandson and your brother's grandson are second cousins to each other.
Your niece's grandson is are your great-grandnephew.
They are 2nd cousins.
No. An adoption proceeding is between a particular child and a particular adopted parent. The relationship cannot be transferred to another person.