ensemble

Short definition from Wiktionary

Noun

1. 1
   A group of separate things that contribute to a coordinated whole.
2. 2
   A coordinated costume or outfit; a suit.
3. 3
   A group of musicians, dancers, actors, etc who perform together; e.g. the chorus of a ballet company.
4. 4
   A piece for several instrumentalists or vocalists.
5. 5
   A probability distribution for the state of the system.
6. 6
   A supervised learning algorithm combining multiple hypotheses.

Verb

1. 1
   To put together in a coordinated whole.
2. 2
   To perform in a musical ensemble.