Extended family habitation
Your third cousins are those relatives who share a great-great-grandparent with you. They are the children of your parents' second cousins and the grand children of your grandparents' first cousins.
great great (etc.) grandparents great grandparents grandparents + great uncles and great aunts parents + uncles and aunts [=parents' siblings] siblings + cousins [=uncles' and aunts' children] children + nephews and nieces [=siblings' children] grandchildren great gandchildren great great (etc.) grandhildren also cousins and second cousins [=(great-)grandparents' descendants]
great great (etc.) grandparents great grandparents grandparents + great uncles and great aunts parents + uncles and aunts [=parents' siblings] siblings + cousins [=uncles' and aunts' children] children + nephews and nieces [=siblings' children] grandchildren great gandchildren great great (etc.) grandhildren also cousins and second cousins [=(great-)grandparents' descendants]
nuclear family
Two people who have the same great grandparents but have no closer relationship are second cousins. Their parents are first cousins and their grandparents are siblings.
The children of your great grandmother's brothers are your first cousins, twice removed.They are also:first cousins of one of your grandparents; andfirst cousins once removed of one of your parents.
There are many kinds of relatives. The most important are your parents, your children, your grandchildren and your siblings. Other relatives are Aunts, uncles, grandparents, first cousins, second cousins, great grandparents, etc., etc.
# Siblings (brothers and sisters) share one or both parents. # Cousins share grandparents (but not parents). Example: children of my aunts and uncles. # Second cousins share great grandparents (but not grandparents). Example: grandchildren of my grandparents' brothers and sisters. If there is difference of one generation once speaks of a cousin 'once removed. In many modern Western societies relationship beyond second cousins is generally regarded as remote.
Because they are young. They know their place in this world and they know that their parents know best. Too simple.
If two people have grandparents who were siblings, then their parents are first cousins and they are second cousins.People whose grandparents are siblings are second cousins.
extended family do include parents children and occasionally grandparents.
Two people who share the same great great grandparents are third cousins. To find a cousin relationship, find the common ancestor. If common ancestor is grandparents, they are 1st cousins. If common ancestor is great-grandparents, they are 2nd cousins. If common ancestor is great-great-grandparents, they are 3rd cousins.