Because their mother and father both gave the same amount and their basicly the same
They could be brothers and sisters or the could be cousins
yes they are because they share a common trait....
well it is like the same as having regular brothers and sisters.
2
Maybe they are bored of the same sex and do things different
yes if they are related
an ethnic group
If they are brothers or sisters
Yes, if you have one parent in common and the other is not your biological parent your siblings would be your half brothers or sisters. Cheyzer
First cousins always share one set of grandparents. First cousins never share siblings because those who share siblings are brothers and sisters. Depending on the nature of the relationship between first cousins, and the laws of the place where they live, it may be legal or not.
My little sister has a different father than me. Therefore, she is my half sister. Her brothers aren't related to me. Because we don't share the same mother or father. My little sister also has a step brother, and not the same mom or dad. Same with her 2 sisters and her 2 step sisters.
A sibling is your brother or sister, if you have a lot of brothers and sisters, people tend to use sibling because it is easier then say 'I have 7 brothers and 3 sister' instead you can say 'I have 10 siblings'