(pos:區別詞)
<explanation>
yue:地底
eng:underground
<eg>
yue:地下通道 (dei6 haa6 tung1 dou6)
eng:underground passage
<eg>
yue:#地下鐵路 (dei6 haa6 tit3 lou6)
eng:underground railway
----
<explanation>
yue:秘密
eng:secret; underground
<eg>
yue:地下刊物 (dei6 haa6 hon2 mat6)
eng:underground publications
<eg>
yue:地下音樂 (dei6 haa6 jam1 ngok6)
eng:underground music
<eg>
yue:地下組織 (dei6 haa6 zou2 zik1)
eng:secret organization

(pos:名詞)
<explanation>
yue:地面
eng:floor; ground
<eg>
yue:枝筆跌咗落地下。 (zi1 bat1 dit3 zo2 lok6 dei6 haa2.)
eng:The pen fell on the ground.
----
<explanation>
yue:由地面計起第一層
eng:ground floor
<eg>
yue:我住喺十八樓，管理員住喺地下。 (ngo5 zyu6 hai2 sap6 baat3 lau2, gun2 lei5 jyun4 zyu6 hai2 dei6 haa2.)
eng:I live on the eighteenth floor; the administrator lives on the ground floor.