spectacular vs splendiferous

spectacular

adj
  • Amazing or worthy of special notice. 

  • Relating to spectacles, or glasses for the eyes. 

noun
  • A pop-up (folded paper element) in material sent by postal mail. 

  • A spectacular display. 

splendiferous

adj
  • beautiful, splendid 

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