• 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

銭 is made of the radical 金 (metal, money) and the phonetic element 戔. The character originally related to tools or thin metal, and later evolved to refer to coins and small amounts of money. The kun-yomi ぜに has deep cultural associations with Edo-era commerce and everyday life.

小銭こぜにを 持もっていますか？
Do you have any small change?

昔むかしは 銭湯せんとうに 通かよっていました。
People used to go to public baths in the past.

銭 is read as セン in on-yomi and ぜに in kun-yomi. The kun-yomi is common in everyday Japanese, especially in set phrases and historical terms.