Final answer:
Cohesion relates to how well the operations in a function relate to one another, with high cohesion being preferable for the clarity of each module. It differs from coupling, which concerns the interdependence between modules, and encapsulation, which involves bundling data and operations and hiding details within a unit.
Step-by-step explanation:
The term that refers to how well the operations in a function relate to one another is cohesion. Cohesion in the context of software engineering is a measure of how strongly-related and focused the responsibilities of a single module or component are. A highly cohesive module or function will typically perform a single task or a group of closely related tasks, making it easier to understand, debug, and maintain. There are also levels of cohesion, ranging from functional cohesion, which is the strongest form, to logical and coincidental cohesion, which are less desirable.
On the other hand, coupling refers to the degree of interdependence between software modules. High coupling means that modules are highly dependent on each other, while low coupling indicates that they are more independent, which is generally preferred as it enhances reusability and makes the system easier to maintain.
Encapsulation is a related concept that deals with the bundling of data and methods that operate on the data within one unit, hiding the details from other units. It is a principle of object-oriented programming that helps to achieve low coupling and high cohesion. Meanwhile, abstraction refers to the concept of hiding the complex reality while exposing only the necessary parts, which is also a way of managing complexity in software development.