Convert array in array of objects

I have an array of words in a .json file

Like this:

[
"city",
"river",
"car"
]

And i want to get an object for each word

Something like this:

[
    {
        word: "city",
        something: "..."
    },
    {
        word: "river",
        something: "..."
    },
    {
        word: "car",
        something: "..."
    }
]

What is the best way to do this?

>Solution :

let new_array = [];

for(let item of old_array)
{
 new_array.push({word:item, something:"..."});     
}