Question

there is still one __ of grapes in the dish​

Answer 1

Answer:

The name given to every person or thing of the same class orkind is a common noun. The name given to a collection of persons or things taken together and spoken of as one whole is a collective noun. 

Bunch is used to describe a collection of items, hence it is a collective noun. Grapes is the common noun for a fruit.

Answer 2

Answer:

there is still one cluster of grapes in the dish.

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