Celestial horizon and Sensible horizon

Celestial horizon noun - The great circle on the celestial sphere whose plane passes through the sensible horizon and the center of the Earth.

Sensible horizon and celestial horizon are semantically related. In some cases you can replace phrase "Sensible horizon" with "Celestial horizon", this phrases are similar.

Sensible horizon noun - The line at which the sky and Earth appear to meet.

Celestial horizon and sensible horizon are semantically related. Sometimes you can replace phrase "Celestial horizon" with "Sensible horizon", this phrases are similar.