習慣custom復習revision予習preparation for a lesson学習study練習practice自習self-study実習practice習字penmanship演習practice慣習usual (historical) custom教習training講習short course風習custom
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漢字Chinese character字引Dictionary字character数字numeral文字letter (of alphabet)文字letter (of alphabet)活字printing type習字penmanship名字surname赤字deficit当て字phonetic-equivalent character英字English letter (character)黒字balance (figure) in the black字体type十字路crossroadsローマ字romanization