noun
Used when something serves as a substitute or stands in for something else. Often appears in compounds like 代わり (かわり).
この部品は純正品の代として使えます。
This part can be used as a substitute for the genuine one.
この建物の代は主に木です。
The material of this building is mainly wood.
noun
Used to indicate the monetary value or price of something. Often seen in commercial or transactional contexts.
この商品の代はいくらですか。
How much is the price of this product?
noun
margin; extra space; allowance
Refers to the extra area or space needed for something, such as a margin for stapling or an allowance for fitting. Often used in practical, physical contexts.
書類を綴じるために、左側に代を取ってください。
Please leave a margin on the left side for binding the documents.
noun
shiro (old land unit)
Archaic unit of land area, approximately 19.83 square meters, one-fiftieth of a tan. No longer in common use.
See also: 反 (たん)
江戸時代の土地の広さは代で表されることがあった。
In the Edo period, land area was sometimes expressed in shiro.
代わり is the more common word for substitution or replacement in modern Japanese, while 代 (しろ) is less frequent and often appears in compounds.
値段 is the standard word for price; 代 (しろ) is a less common synonym, sometimes used in specific contexts like お代 (おしろ) for payment.
The historical derivation is uncertain. The kanji 代 is conventionally associated with meanings of substitution, material, and price, but the exact origin of the reading しろ is unclear.