Combination

Noun

1. The act of combining, the state of being combined or the result of combining.

   "combinations of colors"

2. An object formed by combining.

   "The chef experimented with new flavor combinations."

3. A sequence of numbers or letters used to open a combination lock.

   "The combination to their safe was the date of birth of their first child."

4. One or more elements selected from a set without regard to the order of selection.
5. An association or alliance of people for some common purpose.