Is it possible to achieve the same outcome in JavaScript with these two different code snippets?

I am relatively new to JavaScript and currently exploring the concept of anonymous functions. I created the following code snippet to test my understanding:

Code 1:

function build(something) {
    return function(name) {
        alert("Here is " + something + "\nHello " + name + "!");
    };
}

Subsequently, I decided to remove the semicolon and compare the results:

Code 2:

function build(something) {
    return function(name) {
       alert("Here is " + something + "\nHello " + name + "!");
    }
}

I am invoking the function in both cases as follows:

var station = build("Station");
station();

Although I am not encountering any errors, I am curious if both approaches are equivalent. Additionally, I am wondering why the semicolon is not necessary and which syntax is more commonly used in practice.

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