Final answer:
When people define something by describing what it does or how it works, they are using definition by function, definition by invention, or definition by analogy.
Step-by-step explanation:
When people define something by describing what it does or how it works, they are using definition by function. This approach defines something by its purpose or function. For example, if you define a computer as a device that processes data, you are using definition by function.
On the other hand, definition by invention is when something is defined based on the fact that it was invented. This approach emphasizes the origins or creation of something. For instance, if you define a computer as a device invented by Charles Babbage, you are using definition by invention.
Definition by analogy is when you define something by comparing it to something else. This approach helps in understanding new concepts by relating them to familiar ones. For example, if you define an electric car as a vehicle that runs on electricity, similar to how a smartphone runs on a battery, you are using definition by analogy.
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