“块”可以指一块东西，比如一块糖，也可以用作人民币的口语单位，相当于“元”。
“Kuài” kěyǐ zhǐ yī kuài dōngxi, bǐrú yī kuài táng, yě kěyǐ yòng zuò rénmínbì de kǒuyǔ dānwèi, xiāngdāng yú “yuán”.
The word '块' can mean a piece of something, like a piece of candy. It is also used as a casual unit for Chinese money, just like saying 'buck' for dollar.
“块”字在日常买东西或说东西数量时常用，比如一块糖或一块钱。
“kuài” zì zài rìcháng mǎi dōngxi huò shuō dōngxi shùliàng shí cháng yòng, bǐrú yī kuài táng huò yī kuài qián.
The word “块” is commonly used when shopping or talking about quantities of things, like a piece of candy or one yuan.
片 is for flat, thin pieces like a slice of bread, while 块 is for chunkier pieces.
元 is the formal written word for Chinese yuan; 块 is the common spoken word for the same currency.
毛 is a smaller spoken currency unit; 10 毛 make 1 块.