The term "Younger Sister" refers to a female sibling who is younger than her brother or sister. In many cultures, younger sisters often share a close bond with their older siblings, participating in family activities and learning from them. They may also look up to their older siblings for guidance and support. In family dynamics, younger sisters can play various roles, such as the playful one or the peacemaker during conflicts. Their relationships with siblings, including older brothers and older sisters, can significantly influence their social development and emotional well-being throughout life.