Weaker Class Relationship Stronger Class Relationship
Dependency Association Aggregation Composition Inheritance
<ーーーーーー ◇_______ ◆_______ ◁________
When object of When objects of one When one class owns when one classcontains When one class
one work briefly with class work with objects but shares a reference another class is a type of another
objects of another class of another class for to objects of another class
some prolonged amount class
of time