also: スタア
She became a movie star overnight.
The team's star player missed the game because of an injury.
star symbol; asterisk; star mark
Refers to a star-shaped mark or the asterisk/star key, especially in ratings, interfaces, and device instructions. For the precise symbol * itself, アスタリスク is more technical.
You can add a star to your favorite emails.
Please press the star key at the end.
celestial star
Less common than 星 or 恒星 for actual heavenly bodies; most likely in translated, technical, educational, or English-influenced contexts.
In an astronomical context, スター can refer to a fixed star.
He became a star overnight.
I gave this restaurant five stars.
スター is a broader word for any famous entertainer or sports figure, whereas アイドル implies a carefully managed image and a devoted fan base.
スター implies a top-tier, widely admired celebrity, while 芸能人 is a neutral term for anyone in show business, famous or not.
star configuration; star topology