coach vs qualify

coach

verb
  • To instruct; to train. 

  • To train. 

  • To travel in a coach (sometimes coach it). 

  • To convey in a coach. 

  • To study under a tutor. 

noun
  • A wheeled vehicle, generally drawn by horse power. 

  • The part of a commercial passenger airplane or train reserved for those paying the lower standard fares; the economy section. 

  • The lower-fare service whose passengers sit in this part of the airplane or train; economy class. 

  • The forward part of the cabin space under the poop deck of a sailing ship; the fore-cabin under the quarter deck. 

  • A trainer or instructor. 

  • A long-distance, or privately hired, bus. 

  • A passenger car, either drawn by a locomotive or part of a multiple unit. 

adv
  • Via the part of a commercial passenger airplane or train reserved for those paying the lower standard fares; via the economy section. 

qualify

verb
  • To make someone, or to become competent or eligible for some position or task. 

  • To certify or license someone for something. 

  • To throw and catch each object at least twice. 

  • To compete successfully in some stage of a competition and become eligible for the next stage. 

  • To modify, limit, restrict or moderate something; especially to add conditions or requirements for an assertion to be true. 

  • To give individual quality to; to modulate; to vary; to regulate. 

  • To describe or characterize something by listing its qualities. 

noun
  • An instance of throwing and catching each prop at least twice. 

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