substitute kanji; jōyō kanji used in place of a non-jōyō kanji
A kanji from the jōyō list used to replace a non-jōyō kanji with the same reading, often in official or simplified writing. Example: 両 for 輛.
See also: 常用漢字
The kanji 両 is used as a substitute for 輛 in 車輛.