Combination

Combination may mean:
in chess a sequence of forcing moves, usually involving a sacrifice.
in computer games it is called a combo.
in mathematics, combination is about finding the number of possibilities to pick a number of objects from a set. 
in martial arts and combat sports it means a striking combination
in security, it is a list of numbers which opens a combination lock
in equestrian, a combination is several jumps one after the other
Combinations is the name of the band Eisley's second studio album
A motorcycle combination is also called a sidecar