代用字

だいようじ

noun

•

substitute kanji, jōyō kanji used in place of a non-jōyō kanji(e.g. 両 for 輛)

代	substitute, change, convert, replace, period, age, counter for decades of ages, eras, etc., generation, charge, rate, fee
用	utilize, business, service, use, employ
字	character, letter, word, section of village