What is the difference between sisters?

First of all, express different meanings

1, sister: a friendly title for women of the same age.

2. Sisters: Two sisters or close female friends.

Second, the usage is different.

1, Sisters: Mainstream usage and modern usage collectively refer to family compatriots, brothers are brothers and sisters, no brothers are sisters, and no sisters are brothers. This is a fixed word (fixed words such as sister, husband, father-in-law and Mazu cannot be reduced to morphemes). Also write "Zi Mei".

2. Sisters: used for close friends and blood relatives.

Extended data:

Sisterhood in a narrow sense is a family relationship that cannot be chosen and changed. Usually, because my sister is older than my sister, my sister takes care of my sister more than her sister. Many sisters are as affectionate as their parents. My sister loves her like an elder, and she is proud of loving her.

There should be affection between sisters, and there should be a kinship linked by blood. After the sublimation and accumulation of time, this kind of feeling finally became a kind of affection, no less than the affection of parents for their children.