Stepchild

A stepchild is the offspring of one's spouse, but non one's own offspring, either biologically or through adoption.

Perception

The traditional use of a term "stepfamily" listed to a married couple where one or both members of the couple construct children, with a different biological parent. Some also apply the term generally to non-custodial relationships where “stepparent" can refer to the partner of a parent with whom the child does non live.