This is the 1788th most frequent Japanese word.
刺身
Sashimi: Thinly sliced raw fish or seafood served without rice.
In this sentence, '刺身' is used as a subject (the type of food) for the adjective description.
刺身が新鮮で美味しかった。
The sashimi was fresh and delicious.
Here, '刺身' is the object of the verb '食べた' (to eat), used to inquire about the experience of eating the dish.
刺身を食べたことがありますか？
Have you ever eaten sashimi?
In this sentence, '刺身' is described as a set or combination (盛り合わせ), indicating a variety of the dish ordered.