A grouping of a number of similar things.
The undesirable contiguous grouping of elements in a hash table.
A prewriting technique consisting of writing ideas down on a sheet of paper around a central idea within a circle, with the related ideas radially joined to the circle using rays.
The grouping of a population based on ethnicity, economics or religion.
Forming a cluster.
A group of things having similar characteristics.
A shared feature.
The state or quality of having things in common.
The common people; the commonality.
A class composed of persons lacking clerical or noble rank; commoners.