雲壌

うんじょう【雲壌】

1 〔雲と土〕 clouds and earth; 〔天地〕 heaven and earth.

2 〔はなはだしい相違〕 the greatest possible [imaginable] difference. [＝うんでい]

●雲壌の差 as different as chalk and cheese; as different as can be.