コインkoin

1. nouncoin
   私はこの箱ばこのなかにたくさんのコインを持もっている。↗

   I have many coins in this box.
2. nountoken; slug

• Synonym硬貨こうかNeutralThe formal word for metal currency; 「コイン」 is more colloquial and also covers the tokens used in games.
• Synonym鋳貨ちゅうかWrittenA written, technical term for minted coins; in everyday speech 「硬貨」 is the word to use.
• Antonym紙幣しへいNeutralPaper money, the counterpart of metal 「コイン」.

For coins in formal contexts use 「硬貨」; in speech and in compounds 「コイン」 is the usual choice, and it also covers game tokens. 「鋳貨」 is a written technical term. For paper money, use 「紙幣」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 硬貨こうか。貨幣かへい。
2. ゲームなどで使用しようするメダル様さまの疑似ぎじ通貨つうか。