Modern usage restricts the number of our friends to a narrow circle of intimates, narrower by far than those whom we might occasionally be inclined to trust. But among the Frafras of my study — and perhaps for medieval Englishmen — trust was closely bound up with an idiom of classificatory friendship which had a relatively broad range of application.

XREF: Contrasts modern Western friendship norms with the Frafras' and medieval English broad classificatory idiom.

Diego Gambetta, Trust - Making and Breaking…, loc. 2415