Common practice is a term that refers to a set of behaviors or activities that are widely accepted and regularly done. USAGE (5 letters) is the act of using something, LAW (3 letters) is a system of rules that are enforced by a governing body, habitus (7 letters) is a set of acquired dispositions that shape behavior, HABIT (5 letters) is a regular pattern of behavior, USE (3 letters) is the action of using something, and RULE (4 letters) is an established principle or regulation. All of these terms are related to common practice, as they all refer to behaviors or activities that are regularly done.