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.
numismatics (academic)
coin collecting (hobby)
Referring to the scholarly discipline that studies coins, banknotes, and related objects.
The formal academic term for numismatics. Used in scholarly contexts.
He is majoring in numismatics at university.
Literally 'old coin study', often used interchangeably with numismatics but emphasizes historical coins.
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.
My father's hobby is coin collecting.
A more modern term using the English loanword 'coin'. Common among younger collectors.
A casual term for a coin enthusiast or 'coin maniac'. Slightly slangy.
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.
She is crazy about coin collecting.
He's a coin nut and goes to the market every weekend.