| Subject | English | Greek |
| comp., MS | class member relation | σχέση μέλους κλάσης (An association between specific data members of the two classes in a class relation) |
| work.fl. | class relation | ταξική σχέση |
| comp., MS | class relation | σχέση κλάσης (A connection between two classes in a parent-child relationship. The relation defines the number of instances of each class) |
| work.fl. | class relation | σχέση τάξεων |