Twin siblings are two children born at the same time from the same pregnancy. They can be either identical, sharing the same genetic material, or fraternal, resulting from two separate eggs being fertilized. Identical twins often look very similar, while fraternal twins may resemble each other like any other siblings. Twins can share a special bond due to their unique experiences growing up together. They often have similar interests and may even develop their own language or communication style. Many twins enjoy participating in activities together, such as sports or school events, which can strengthen their relationship.