• 小銭こぜに — small change
• 銭湯せんとう — public bath
• 古銭こせん — old coins
• 無銭むせん — without money
• 金銭きんせん — money; funds
• 釣銭つりせん — change (money given back)

銭 combines 金 (metal/money) with the phonetic 戔, which evokes “thinly cut metal.” It shifted to mean coins and small amounts of money. The kun-yomi ぜに carries a colloquial, old-Japanese flavor tied to everyday commerce.

財布さいふに 小銭こぜにが たくさん 入はいっています。
There is a lot of small change in my wallet.

金銭きんせんの 管理かんりは とても 大切たいせつです。
Managing money is very important.