galactic vs great big

galactic

adj
  • Enormous (in size or impact). 

  • Relating to a galaxy. 

  • Of or pertaining to milk, or the secretion of milk. 

  • Relating to the Milky Way galaxy. 

great big

adj
  • very big; huge 

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