dizzying vs gratuitous

dizzying

adj
  • Tending to make one (actually or metaphorically) dizzy or confused, as of great speed or height. 

gratuitous

adj
  • Given freely; unearned. 

  • Unjustified or unnecessary; not called for by the circumstances. 

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