stepchild

As a noun stepchild

is a stepson or stepdaughter.

As an adjective undefined is

lacking a definition or value.

In obsolete|lang=en terms the difference between child and stepchild

is that child is (obsolete) a female infant; a girl while stepchild is (obsolete) a bereaved child; one who has lost father or mother.

As nouns the difference between child and stepchild

is that child is a daughter or son; an offspring while stepchild is a stepson or stepdaughter.

As a noun stepchild is

a stepson or stepdaughter.

As nouns the difference between taxonomy and stepchild

is that taxonomy is the science or the technique used to make a classification while stepchild is a stepson or stepdaughter.

As nouns the difference between stepchild and stepbairn

is that stepchild is a stepson or stepdaughter while stepbairn is a stepchild.

As nouns the difference between stepchild and stepkid

is that stepchild is a stepson or stepdaughter while stepkid is stepchild.

As nouns the difference between stepchild and stepgranddaughter

is that stepchild is a stepson or stepdaughter while stepgranddaughter is the daughter of one's stepchild, or the stepdaughter of one's child.

As nouns the difference between stepchild and stepgrandchild

is that stepchild is a stepson or stepdaughter while stepgrandchild is the stepchild of one's own child.

As nouns the difference between stepchild and stepgrandson

is that stepchild is a stepson or stepdaughter while stepgrandson is the son of one's stepchild, or the stepson of one's child.