noun, noun which may take the genitive case particle 'no'
five stars (rating)
Used for a five-star rating, as in reviews, hotels, or restaurants. Often appears in compounds like 五つ星ホテル.
このホテルは五つ星の評価を受けている。
This hotel has received a five-star rating.
五つ星レストランで食事をした。
I dined at a five-star restaurant.
Compound of 五つ (itsutsu, 'five') and 星 (hoshi, 'star'), with rendaku voicing of ほし to ぼし.