What Is the Difference Between a Stepsister and a Half-Sister?
A stepsister is the daughter of one’s stepparent, while a half-sister shares the same biological mother or father. A half-sister can only share one biological parent to be considered a half-sibling.
If two adults marry, and each has children from a previous relationship, those children will become step-siblings to each other. Neither of the children shares a biological parent.
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