buy vs hire

buy

verb
  • To obtain (something) in exchange for money or goods. 

  • To make a purchase or purchases, to treat (for a drink, meal or gift) 

  • To make a bluff, usually a large one. 

  • To bribe. 

  • To be equivalent to in value. 

  • To obtain, especially by some sacrifice. 

  • to accept as true; to believe 

noun
  • Something which is bought; a purchase. 

hire

verb
  • To exchange the services of for remuneration. 

  • To occupy premises in exchange for rent. 

  • To employ; to obtain the services of (a person) in exchange for remuneration; to give someone a job. 

  • To accept employment. 

  • To obtain the services of in return for fixed payment. 

  • To accomplish by paying for services. 

  • (neologism) (in the Jobs-to-be-Done Theory) To buy something in order for it to perform a function, to do a job 

noun
  • Payment for the temporary use of something. 

  • A person who has been hired, especially in a cohort. 

  • The state of being hired, or having a job; employment. 

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