noun, noun, used as a suffix
Refers to the act or result of changing something. Very common as a suffix in compounds such as 席替え, 模様替え, and クラス替え.
来週、教室で席替えをする。
Next week we will change seats in the classroom.
週末に部屋の模様替えをした。
I rearranged my room over the weekend.
noun
replacement; substitute; spare; change of clothes
Means an item kept or used in place of another. In phrases like シャツの替え or 靴下の替え, it means a spare change of clothing.
念のため、靴下の替えを持って行こう。
Let's take a spare pair of socks just in case.
この部品の替えはありますか。
Do you have a replacement for this part?
noun
exchange rate; rate of exchange
Only when written 換え
Financial or exchange-related use, usually written 換え. As a standalone modern term it is limited; 為替レート or 交換レート is usually clearer.
金融の文脈では、「換え」が通貨の交換比率を指すことがある。
In financial contexts, 換え can refer to the exchange ratio between currencies.
Used when the nuance is substitution or taking the place of something or someone.
The transitive verb meaning to change or replace something; 替え is the noun or suffix form.
More explicit for exchanging or swapping things, especially mutually; it does not usually mean a spare change of clothes.
Means a spare or reserve kept for later use, while 替え can also mean the replacement itself or the act of changing.
The usual modern expression for a currency exchange rate; safer and clearer than the limited standalone 換え sense.
Nominal form of verbs read かえる, such as 替える, 換える, and 代える. The different kanji spellings conventionally highlight changing, exchanging, or substituting rather than separate pronunciations.