Masses refer to large groups of people or objects that share common characteristics or interests. In physics, mass is a measure of the amount of matter in an object, typically measured in kilograms or grams. It is a fundamental property that affects how objects interact with forces, such as gravity. In social contexts, masses can describe collective behaviors or movements, often seen in events like protests or rallies. The study of masses in sociology examines how individuals within a group influence each other and how social dynamics shape collective actions, impacting society as a whole.