earthly vs planetic

earthly

adj
  • Relating to the earth or this world, as opposed to heaven; terrestrial. 

  • Used for emphasis 

adv
  • in an earthly manner. 

noun
  • That which is of the earth or earthly; a terrestrial being. 

  • A slightest chance (of success etc.) or idea (about something). 

planetic

adj
  • Of or relating to planets. 

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