Cousine
The relationship to you would be your cousin !
Your son and your nephew are first cousins to each other. Their daughters are second cousins to each other.
your 5th cousin
Your father's first cousin's son is your second cousin. Your father's second cousin's son is your third cousin. If your are asking about your fathers cousins who are in a removed cousin relationship to your father, their relationship to you be more complex, with two different possibilities in each case.
third cousin once removed
Dina Bonnevie has two sons and one daughter. Her sons are with her former husband, actor and director, and her daughter is from a later relationship. She has often spoken about her close relationship with her children.
Great Niece.
Your granddaughter and your sister's grandson are second cousins.
They are second cousins
Your first cousin is your son's first cousin once removed.
Students, husbands, fathers, sons, nephews, cousins, brothers, doctors, school teachers, etc. were being drafted into the military.
It's called the daughter-in-law.