Blended family
Extended family
A half brother or half sister
Stepchildren
In laws
includes grandparents, great-grandparents, aunts, uncles, cousins, nieces nephews, and in-laws.
includes stepparents and stepchildren, also include half brothers and half sisters.
is someone who is a relative because of marriage, like your husband's sister or your wife's father.
are the children of one's spouse and his or her previous husband or wife.
is someone with whom a person has one biological parent in common.