justify vs prove

justify

verb
  • To prove; to ratify; to confirm. 

  • To absolve, and declare to be free of blame or sin. 

  • To be a good, acceptable reason for; warrant. 

  • To qualify (oneself) as a surety by taking oath to the ownership of sufficient property. 

  • To arrange (text) on a page or a computer screen such that the left and right ends of all lines within paragraphs are aligned. 

  • To provide an acceptable explanation for. 

  • To give reasons for one’s actions; to make an argument to prove that one is in the right. 

  • To show (a person) to have had a sufficient legal reason for an act that has been made the subject of a charge or accusation. 

prove

verb
  • To demonstrate that something is true or viable; to give proof for. 

  • To put to the test, to make trial of. 

  • To ascertain or establish the genuineness or validity of; to verify. 

  • To determine by experiment which effects a substance causes when ingested. 

  • simple past tense of proove 

  • To turn out; to manifest. 

  • To turn out to be. 

noun
  • The process of dough proofing. 

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