injustice vs left-handed compliment

injustice

noun
  • Unfairness; the state of not being fair or just. 

  • Violation of the rights of another person or people. 

  • Absence of justice; unjustice. 

left-handed compliment

noun
  • A complimentary remark which is ambiguous or ineptly worded, so that it may be interpreted as having an unflattering or dismissive sense. 

How often have the words injustice and left-handed compliment occurred in a corpus of books? (source: Google Ngram Viewer )