In programming, the terms "parameter" and "argument" are related to functions or methods.
A parameter is a variable that is defined in the function signature, and it represents a value that must be passed to the function when it is called. The parameter is used by the function to perform its calculations or actions. For example, in the following function, "x" and "y" are parameters:
```
function add(x, y) {
return x + y;
}
```
An argument, on the other hand, is the actual value that is passed to the function when it is called. It is the value that corresponds to the parameter in the function definition. For example, if we call the "add" function with the arguments 2 and 3, like this:
```
add(2, 3);
```
Then "2" and "3" are the arguments, and they correspond to the "x" and "y" parameters in the "add" function.
In summary, a parameter is a variable defined in the function signature, while an argument is the actual value passed to the function when it is called.
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