Collective noun for actors – Troupe, Company or Cast
Collective noun for soldiers – Army
Collective noun for musicians – Band
Collective noun for warriors – Troop
Collective noun for directors – Board
Collective noun for sailors – Crew
Collective noun for singers – Choir
Collective noun for dancers – Group
Collective noun for thieves – Pack
Collective noun for players – Team
Collective noun for delegates – Delegation
Collective noun for judges – Panel or Bench