寿司をご馳走します。

sushi; anything made with vinegared rice (may also contain vegetables, spices, fish, or other delicacies)

indicates direct object of action; indicates subject of causative expression; indicates an area traversed; indicates time (period) over which action takes place; indicates point of departure or separation of action; indicates object of desire, like, hate, etc.

feast; treating (someone); to treat (someone, e.g. to a meal)