Cluster

Anhäufung

(bunch or group of several discrete items that are close to each other)

Büschel

(bunch or group of several discrete items that are close to each other)

Gruppe

(bunch or group of several discrete items that are close to each other)

Haufen

(bunch or group of several discrete items that are close to each other)

Schwarm

(bunch or group of several discrete items that are close to each other)

Traube

(bunch of grapes)