const foods = {
    pizza: "Italian",
    rolls: "Japan",
    korovai:"Russian"
};
for (let prop in foods){
    console.log(prop, foods[prop]);         //это в объекте
}

console.log(" ");

const arrFoods = ["pizza", "rolls", "korovai"];
for (let food in arrFoods){
    console.log(food, arrFoods[food]);      //это в массиве
}