For example:
* "Stepmother" refers to the wife of a child's father, but who is not the child's biological mother.
* "Stepfather" refers to the husband of a child's mother, but who is not the child's biological father.
The word "step" is used in many family relationships to denote a relationship formed through marriage, such as:
* Stepbrother/Stepsister: Siblings who share only one parent, due to their parents marrying after having other children.
* Stepchild: A child of a spouse, but not the biological child of the person using the term.
* Stepgrandparent: The parent of a spouse, not the biological grandparent.