celebrate vs commend

celebrate

verb
  • To engage in joyful activity in appreciation of an event. 

  • To perform or participate in, as a sacrament or solemn rite; to perform with appropriate rites. 

  • To extol or honour in a solemn manner. 

  • To honour by rites, by ceremonies of joy and respect, or by refraining from ordinary business; to observe duly. 

commend

verb
  • To congratulate or reward. 

  • To recommend. 

  • To entrust or commit to the care of someone else. 

  • To praise or acclaim. 

  • To mention by way of courtesy, implying remembrance and goodwill. 

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