Frequent interaction in pubs, clubs and societies, families and friendship groups.

What may seem to be a work group to an observer may be a friendship group to the members.

Informal friendship groups occur most often laterally in the hierarchy - peers, rather than bosses and subordinates, are friends.

It involves students in self-directed, independent learning, in friendship groups, working on a series of musical tasks.

Without the shared concerns of being army commanders, the children drifted into their natural friendship groups.

In attendance are the foster family, Sam's friendship group, and a newly-single Rita with her son.

They also briefly try to cut Chandler out of their friendship group after he ignores them.

The Chavurah program (friendship groups) cater to various interests and age groups.

Another academic had studied a "friendship group" of 18 women in the Midlands.

In elementary school, cliques are hierarchical friendship groups based on popularity and prestige.