How does passing a value in function parameters differ from passing specific data when calling that function?

Function parameters are variables declared in the function definition that serve to receive values when called. Actual data (arguments) are the real values passed to these parameters during the function call.

For example:

def greet(name):  # name is a parameter
    print(f"Hello, {name}!")

greet("Alice")  # "Alice" is an argument

Here, name is a parameter, and "Alice" is a specific value passed during the call. Parameters define the structure of the function, while arguments are the data the function works with during execution.