noun / verb
cluster
KLUS-ter/ˈklʌstər/
A group of things close together, or to gather into such a group.
A tight cluster of purple grapes hangs from a single stem.

Etymology
Old English clyster described things growing naturally together. That image of a compact bunch broadened to include people, animals, or objects gathered closely together.
In context
bring those families in the cluster together
More examples
- Purple grapes hang in tight clusters on the vine.
- Students cluster around the teacher to see the tiny frog.
- She clusters the pots near the window.
Forms
cluster · clusters · clustered · clustering
Similar words
- group
- Does not necessarily imply that members are physically close together.
- bunch
- Often suggests things held, tied, or growing together.
- congregate
- Usually describes people or animals gathering in one place.