What's the difference between a brother and a sister?

In the Chinese context, there are certain differences between the names of brothers and sisters. Brothers and sisters refer to brothers and sisters whose parents are the same or half-brothers, and brothers and sisters refer to brothers and sisters whose parents are the same or half-brothers. Therefore, in terms of address, words such as "elder brother", "elder sister", "younger brother" and "younger sister" are generally used between siblings, while words such as "elder brother", "elder sister" and "younger brother" are generally used between siblings. Of course, brothers and sisters may have different names in different regions and cultures.