Meaning : A collection of things that have been combined. An assemblage of separate parts or qualities.
Meaning : A coordinated sequence of chess moves.
Meaning : A sequence of numbers or letters that opens a combination lock.
Example :
He forgot the combination to the safe.
Meaning : A group of people (often temporary) having a common purpose.
Example :
They were a winning combination.
Meaning : An alliance of people or corporations or countries for a special purpose (formerly to achieve some antisocial end but now for general political or economic purposes).
Meaning : The act of arranging elements into specified groups without regard to order.