condition vs qualify

condition

verb
  • To place conditions or limitations upon. 

  • To treat (the hair) with hair conditioner. 

  • To test or assay, as silk (to ascertain the proportion of moisture it contains). 

  • To contract; to stipulate; to agree. 

  • To subject to the process of acclimation. 

  • To shape the behaviour of someone to do something. 

  • To impose upon an object those relations or conditions without which knowledge and thought are alleged to be impossible. 

  • To put under conditions; to require to pass a new examination or to make up a specified study, as a condition of remaining in one's class or in college. 

  • To make dependent on a condition to be fulfilled; to make conditional on. 

  • To subject to different conditions, especially as an exercise. 

noun
  • A logical clause or phrase that a conditional statement uses. The phrase can either be true or false. 

  • A requirement or requisite. 

  • The health status of a medical patient. 

  • A certain abnormal state of health; a malady or sickness. 

  • A clause in a contract or agreement indicating that a certain contingency may modify the principal obligation in some way. 

  • The state or quality. 

  • A particular state of being. 

qualify

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

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

  • 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 condition and qualify occurred in a corpus of books? (source: Google Ngram Viewer )