The collective noun for Gorillas is a band, a troop, or a whoop. A band is a group of Gorillas that typically consists of one dominant male, several females, and their offspring. A troop is a larger group of Gorillas that can include multiple males and females. A whoop is a group of Gorillas that is usually made up of a single male and several females.
The etymology of the collective nouns for Gorillas is derived from the behavior of the animals. A band is a reference to the close-knit family structure of Gorillas, while a troop is a reference to the larger groups of Gorillas that can be seen in the wild. A whoop is a reference to the loud vocalizations that Gorillas make when they are excited or alarmed.