woman loves a man, they have childeren. A parent is either a man or woman who have childeren. The woman and man have parents of their own. To the the children, they are grandparents. The grandparents' parents to the children are called great grandparents. Then to great great parents, and so on.
The man and womans' siblings to the kids are aunt and uncle. The uncle is the brother of the mand and woman. And the aunt is the sister. The parents' aunt and uncles to the kids are great aunt and uncle.
A brother and sister is the childeren of a man and woman. The girl is the sister. The boy is the brother.
Most families love eachother. Some families can have parents that get divorced and makes the family complicated. The father may take one kid, the mother might take the other. Or one could take both.
-the family your born into
-the family you marry into
-the family you make
Its always changing, people die, get born, marry in and divorce out, but its people who for some reason or another claim each other, whether it's by blood or by your own choice.