A group of guns or missile launchers operated together at one place - Battery
A large bundle bound for storage or transport - Bale
A large gathering of people of a particular type - Bevy
An arrangement of flowers that is usually given as a present - Bouquet
A family of young animals - Brood
A group of things that have been hidden in a secret place - Cache
A group of people, typically with vehicles or animals travelling together - Caravan
A closed political meeting - Caucus