👉 The term "sister" is a gender-neutral, informal term used to refer to a person who has a close and intimate relationship with another person. It can be used in various contexts such as romantic relationships, friendships, or familial relationships where one person is considered the other's immediate relative or sibling. In many cultures, the term "sister" is often used interchangeably with the gender-neutral term "cousin." However, it is also possible to use the term "sister"