noun
combination
kahm-bih-NAY-shuhn/ˌkɑːmbɪˈneɪʃn/
A group of things brought together in a particular way.
The cord is a combination of three differently colored strands of yarn.

Etymology
The pieces evoke joining things together two by two. From that act of pairing, the meaning broadened to uniting things generally and to the whole or mixture produced.
In context
this next one is a combination of multiple tools of the same kind
More examples
- Her combination of patience and humor makes her a great teacher.
- We try several color combinations before choosing blue and yellow.
- I forget the combination to my locker.
Forms
combination · combinations
combine verb — To bring things together into a whole.
Similar words
- mixture
- Emphasizes ingredients mingling rather than how they are arranged.
- arrangement
- Emphasizes the placement or order of things within a group.