Stepsister and Stepparent

Stepsister noun - A sister who has only one parent in common with you.

Stepparent and stepsister are semantically related in relative topic. In some cases you can use "Stepparent" instead a noun "Stepsister", when it comes to topics like member of a family.

Stepparent noun - The spouse of your parent by a subsequent marriage.

Stepsister and stepparent are semantically related in relative topic. You can use "Stepsister" instead a noun "Stepparent", if it concerns topics such as member of a family.