niggle vs praise

niggle

verb
  • To use, spend, or do in a petty or trifling manner. 

  • To dwell too much on minor points or on trifling details. 

  • To fidget, fiddle, be restless. 

noun
  • A minor complaint or problem. 

praise

verb
  • To give praise to; to commend, glorify, or worship. 

noun
  • Commendation; favourable representation in words. 

  • Worship. 

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