- 收錄成語和組合比較固定的四字詞語 1,073 條
- 常見四字詞語中用語不一而意義、用法完全相同者，例如「標奇立異、標新立異」，「面不改容、面不改色」，「歸根結柢、歸根結底」，在左旁用符號 [ 連結
- 詞語中異體字不另列出：縱使詞語中可用異體字，亦只顯示其中一個常見寫法，例如只收「穿針引線」而不收「穿針引綫」
- 1,073 four-character words listed, including idioms and relatively consistent character combinations
- Different expressions identical in meaning and usage listed in parallel, linked with the [ mark on the left, such as " 標奇立異, 標新立異", "面不改容, 面不改色" and"歸根結柢, 歸根結底"
- Variant characters in the words not listed in full; usually only one commonly-used variant listed, such as "穿針引線" but not "穿針引綫" listed
- Simple English explanation added