回数券（かいすうけん、kaisuuken）
- coupon ticket

The Japanese word 回数券回数券 (かいすうけん) refers to a "book of tickets," a "coupon ticket," or a "multiple-use ticket." It's a set of tickets purchased in advance, usually at a discounted price, for a specific service or type of service. These tickets are used multiple times until they are all used up. This is very common in Japan and is used for various things, such as train rides, bus rides, entry to hot springs, or even haircuts.

⚫︎ 電車（でんしゃ）の回数券を買（か）いました。 Translation: I bought a train 回数券回数券. ⚫︎ 温泉（おんせん）の回数券は、お得（おとく）ですよ。 Translation: The coupon ticket for hot springs is a good deal. ⚫︎ 美容院（びよういん）の回数券は、よく使（つか）います。 Translation: I often use a coupon ticket for a beauty salon.

You use 回数券回数券 when you are discussing or referring to these types of pre-paid ticket bundles. You can use it when buying the ticket or after you have bought the ticket. For instance, "I used a 回数券回数券 for the train today." You can also use it to suggest its purchase: "Why don't you buy a 回数券回数券? It's cheaper."

⚫︎ The word 回数券回数券 is typically written in kanji and hiragana: 回数券回数券 (かいすうけん). ⚫︎ There are no common variations in how it is written.

⚫︎ チケット (chiketto) - ticket ⚫︎ クーポン (kuupon) - coupon ⚫︎ まとめ券 (matome ken) - bundled tickets

⚫︎ 片道（かたみち）きっぷ (katamichi kippu) - one-way ticket (not directly an antonym, but the opposite of a multi-use ticket) ⚫︎ 通常（つうじょう）きっぷ (tsuujou kippu) - regular ticket (again, not a direct antonym, but rather a different type of ticket)

東京（とうきょう）と大阪（おおさか）の間（あいだ）の回数券は、とても便利（べんり）です。 ・Translation: The multiple-use tickets between Tokyo and Osaka are very convenient. ・Explanation: This sentence explains that the coupon tickets are very helpful for those traveling between Tokyo and Osaka.

バスの回数券をなくしてしまって、困（こま）っています。 ・Translation: I've lost my bus coupon ticket, and I'm in trouble. ・Explanation: This sentence expresses a problem related to losing a 回数券回数券.

The word 回数券回数券 is composed of three parts: ⚫︎ 回 (kai) - times, occurrences, or round ⚫︎ 数 (suu) - number ⚫︎ 券 (ken) - ticket, coupon, or certificate Therefore, 回数券回数券 literally means a "number of times ticket," indicating that it's a ticket that allows you to use a service a certain number of times.