[, ] ( commonalities) the state of sharing features or qualities; a feature or quality that is shared共同特征；共性◆There is little commonality between the systems used by the different departments.不同部门使用的系统之间几乎没有共性。◆The three aircraft share 98% parts and systems commonality (= they use the same parts in their production).这三架飞机有 98% 的零部件和系统是相同的。