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6 changes: 3 additions & 3 deletions 1-js/05-data-types/06-iterable/article.md
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Expand Up @@ -118,7 +118,7 @@ Of course, the `for..of` loop over such an iterable would be endless. But we can

## String is iterable

Arrays and strings are most widely used built-in iterables.
Arrays and strings are the most widely used built-in iterables.

For a string, `for..of` loops over its characters:

Expand Down Expand Up @@ -168,11 +168,11 @@ That is rarely needed, but gives us more control over the process than `for..of`
Two official terms look similar, but are very different. Please make sure you understand them well to avoid the confusion.

- *Iterables* are objects that implement the `Symbol.iterator` method, as described above.
- *Array-likes* are objects that have indexes and `length`, so they look like arrays.
- *Array-likes* are objects that have indexes and `length`, so they look like arrays. They can use the [`concat` method](/array-methods#concat) by setting the `Symbol.isConcatSpreadable` property.

When we use JavaScript for practical tasks in a browser or any other environment, we may meet objects that are iterables or array-likes, or both.

For instance, strings are both iterable (`for..of` works on them) and array-like (they have numeric indexes and `length`).
For instance, strings are both iterable (`for..of` works on them, and use the `Symbol.iterable` method) and array-like (they have numeric indexes and `length`, and use the `Symbol.isConcatSpreadable` property).

But an iterable may not be array-like. And vice versa an array-like may not be iterable.

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