commonality

noun

1. (countable, uncountable)The joint possession of a set of attributes or characteristics.

   “Zunin sold the idea to his military superiors in the fearful jargon of his profession: "In a situation where commonality of loss of the husband is present, the group can be exceedingly supportive."”

2. (countable, uncountable)Such a shared attribute or characteristic
3. (countable, uncountable)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.
4. (countable, obsolete, uncountable)The common people; the commonalty.