硬币 (yìng bì): เหรียญ

I felt a coin in the crack of the sofa, just enough to buy a bottle of water.

She used to put the coins from her change into a glass jar, and after saving for three years, she surprisingly had over five hundred yuan.

The child inserted a coin into the vending machine and chose a pack of cookies, but the machine got stuck.

He took the coins out of his pocket, counted them, and found he was still two yuan short for the bus fare.

Grandpa likes collecting old coins; one of them is from the Qing Dynasty and is already quite valuable.

She put a few coins on the table to indicate to the waiter that this was the tip.