impressive vs memorable

impressive

adj
  • Capable of being impressed. 

  • Appealing. 

  • Making, or tending to make, a positive impression; having power to impress 

memorable

adj
  • Worthy to be remembered; very important or remarkable. 

noun
  • Something interesting enough to be remembered. 

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