noun
far apart; ends of the earth
Yojijukugo meaning two places are extremely distant from each other, like the edge of the sky and the corner of the earth. Literary and somewhat rare.
二人は天涯地角に離ればなれになった。
The two were separated far apart, as if at the ends of the earth.
A yojijukugo combining 天涯 (edge of the sky) and 地角 (corner of the earth), both classical Chinese expressions for remote places. The exact historical derivation is uncertain, but the phrase is used to emphasize vast distance.