'Relatives' in the Bible

Naomi said to her daughter-in-law, “May he be blessed of the Lord who has not withdrawn his kindness to the living and to the dead.” Again Naomi said to her, “The man is our relative, he is one of our closest relatives.”

Isn't Boaz one of our close relatives? You've been associating with his women servants lately. Look, he'll be winnowing barley at the threshing floor tonight.

I will also acquire Ruth the Moabitess, Mahlon’s widow, as my wife, to perpetuate the deceased man’s name on his property, so that his name will not disappear among his relatives or from the gate of his home. You are witnesses today.”