achieve vs buy

achieve

verb
  • To obtain (a material thing). 

  • Show all the spoils by valiant kings achieved. 

  • To succeed in something, now especially in academic performance. 

  • To carry out successfully; to accomplish. 

  • To obtain, or gain (a desired result, objective etc.), as the result of exertion; to succeed in gaining; to win. 

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. 

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