Find the correct word by incrementing chart code of letters

Write a function that takes a string as argument and it might not have any meaning. Increment the char code of each letter and find a meaningful word.

// Return the correct word

function nextChar(c) {
    return String.fromCharCode(c.charCodeAt(0) + 1);
}

const correctWord = (str) => {
    let word = '';
    for(let i =0; i < str.length ; i++) {
        word += nextChar(str[i]);
    }
    return word;
};
const input = "bnchmf";
console.log(input);
console.log(correctWord(input)); // coding