A quality that applies to materiel or systems: (a) possessing like and interchangeable parts or characteristics enabling each to be utilized, or operated and maintained in common; (b) having interchangeable repair parts and/or components; (c) applying to consumable items interchangeably equivalent without adjustment
refers to the use of identical parts, components, subsystems or systems to achieve economies in development and manufacture
Some common material fact or question of law that is common to all potential class members
Commonality is used to refer to a feature or purpose that is shared by two or more people or things. We don't have the same commonality of interest There are an amazing number of commonalities between systems. the fact of having things in common