striking vs unobtrusive

striking

adj
  • Making a strong impression. 

  • On strike, taking part in industrial action. 

noun
  • The act by which something strikes or is struck. 

unobtrusive

adj
  • Not obtrusive; not blatant or noticeable; discreet, inconspicuous. 

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