Cluster
Definition 1 of 4
Pro Tip 1/3
Visual Imagery
Use 'cluster' to describe things grouped in a way that forms a visual pattern. A cluster of wildflowers brightened the meadow.
Pro Tip 2/3
Close Proximity
'Cluster' implies the elements are not just grouped, but also close to each other. A noisy cluster of birds gathered at the feeder.
Pro Tip 3/3
Common Characteristics
Elements in a cluster share common traits or purposes. The town center had a cluster of historical buildings.