Adoption

The act of adopting, or state of being adopted; voluntary acceptance of a child of other parents to be the same as one's own child.

Admission to a more intimate relation; reception; as, the adoption of persons into hospitals or monasteries, or of one society into another.

The choosing and making that to be one's own which originally was not so; acceptance; as, the adoption of opinions.

a legal proceeding that creates a parent-child relation between persons not related by blood; the adopted child is entitled to all privileges belonging to a natural child of the adoptive parents (including the right to inherit)

the appropriation (of ideas or words etc.) from another source; "the borrowing of ancient motifs was very apparent"