連声: a morphological change of an initial syllable of the second kanji under the influence of the historical coda of the first kanji in a word

二乗: squaring

二条:

二乗: square

弾正: / 壇上: on an altar, stage, or platform / 壇場:

The hiragana syllable しゅ (shu). Its equivalent in katakana is シュ (shu).

The hiragana syllable じゅ (ju). Its equivalent in katakana is ジュ (ju).

綬: cordon, ribbon

The hiragana syllable にゅ (nyu). Its equivalent in katakana is ニュ (nyu).

Small combining form of hiragana ゆ (yu) used in 拗音 (yōon) morae that end in u, such as しゅ (shu), ちゅ (chu), and きゅ (kyu). Historically not distinguished from full-size version.