planetary vs superterrestrial

planetary

adj

Of, or relating to the whole Earth; global.
Of, or relating to planets, or the orbital motion of planets.
Of, or relating to the Earth; terrestrial.
epicyclic

noun

A planetary nebula.

superterrestrial

adj

Above the Earth or earthly concerns.

How often have the words planetary and superterrestrial occurred in a corpus of books? (source: Google Ngram Viewer )