approval vs gripe

approval

noun
  • An expression of favorable acceptance and encouragement; a compliment that also condones. 

  • Something mailed by a seller to a collector to match their stated interests; the collector can approve of or return the item. 

  • An expression granting permission; an indication of agreement with a proposal; an acknowledgement that a person, thing, or event meets requirements. 

gripe

noun
  • A complaint, often a petty or trivial one. 

  • A wire rope, often used on davits and other life raft launching systems. 

  • The compass or sharpness of a ship's stern under the water, having a tendency to make her keep a good wind. 

  • The piece of timber that terminates the keel at the fore end; the forefoot. 

  • Pinching and spasmodic pain in the intestines. 

  • An assemblage of ropes, dead-eyes, and hocks, fastened to ringbolts in the deck, to secure the boats when hoisted. 

verb
  • To suffer griping pains. 

  • To tend to come up into the wind, as a ship which, when sailing close-hauled, requires constant labour at the helm. 

  • To annoy or bother. 

  • To complain; to whine. 

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