Translation guide
The study or collection of coins, paper money, and medals. In Japanese, this is typically expressed with the academic term 貨幣学 (kaheigaku) or the more common 古銭収集 (kosen shūshū) for coin collecting.
Referring to the scholarly discipline that studies coins, banknotes, and related objects.
The formal academic term for numismatics. Used in scholarly contexts.
彼は大学で貨幣学を専攻している。
He is majoring in numismatics at university.
Literally 'old coin study', often used interchangeably with numismatics but emphasizes historical coins.
古銭学の研究者は珍しいコインを分析する。
Numismatic researchers analyze rare coins.
Referring to the hobby of collecting coins, often for their historical or artistic value.
The most common way to say 'coin collecting'. 古銭 means old coins, and 収集 means collection.
父の趣味は古銭収集です。
My father's hobby is coin collecting.
A more modern term using the English loanword 'coin'. Common among younger collectors.
彼女はコイン収集に夢中だ。
She is crazy about coin collecting.
A casual term for a coin enthusiast or 'coin maniac'. Slightly slangy.
彼は古銭マニアで、週末はいつも市場に行く。
He's a coin nut and goes to the market every weekend.
古銭 (kosen) specifically means old or historical coins, while 貨幣 (kahei) refers to currency in general, including modern money. For numismatics as a hobby, 古銭収集 is more natural than 貨幣収集.