Meaning – The word entity, refers to any single, identifiable object. In the general sense, this could refers to a person, animal or even an inanimate object.
In the context of computers and programming, an entity refers to systems, bits of data or even distinct system components that are considered significant in and of themselves.
One of the characteristics of an entity, no matter what the context, is that is can be considered as a separate whole and is known to possess a unique set of properties or characteristics.
In the context of Open Systems Interconnection model (OSI model), the word entity, refers to discrete system components that use different protocols to communicate with each other
Example of usage – “The new employee was tasked with studying and classifying every entity within the employee database.”