What are props in react js ?

export default function Card(props) {    return (        <div className="card">            <img src={`../images/${props.img}`} className="card--image" />            <div className="card--stats">                <img src="../images/star.png" className="card--star" />                <span>{props.rating}</span>                <span className="gray">({props.reviewCount})  </span>                <span className="gray">{props.country}</span>            </div>            <p>{props.title}</p>            <p><span className="bold">From ${props.price}</span> / person</p>        </div>    )}