In modern English, the term sister refers to a female sibling. A sister is an important person in a person’s life. She is usually related to the person, but can also be a friend. She is the person who is quick to forgive and always loves the person. Whether a sister is related to a person or not, she will always be there for him or her.
A sister is a female relative of the first degree, meaning she is related to another person through blood. The term sister can also refer to a woman from the same religion, church, or community. While many women prefer to refer to their own mother as sister, the term sister can be used to describe a female sibling.