klutz vs schmuck

klutz

noun
  • A clumsy or stupid person. 

schmuck

noun
  • A deplorable, pitiful person. 

  • A jerk; a person who is unlikable, detestable, or contemptible because he or she is stupid, foolish, clumsy, oafish, inept, malicious, or unpleasant. 

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