This is the 935th most frequent Chinese word.
块
"块" means "piece," "chunk," or a unit of currency (informal).
In this sentence, '块' is a measure word used for items that come in chunks or pieces.
这是一块蛋糕。
This is a piece of cake.
In this context, '块' denotes a specific piece of an object, such as a rock.
他在池塘里找到了一块石头。
He found a rock in the pond.
Here, '块' refers to blocks of land or sections.