mend vs perfect tense

mend

noun
  • The act of repairing or recovering. 

  • A place, as in clothing, which has been repaired by mending. 

verb
  • To grow better; to advance to a better state; to become improved. 

  • To repair (something that is torn, broken, defaced, decayed, or otherwise damaged) 

  • To put in a better state; to set right; to reform; 

  • To quicken 

  • To help, to advance, to further; to add to. 

perfect tense

noun
  • A verb form indicating that an action or state has been completed at the present time, in the past, or shall be completed in the future. 

  • Often, specifically, the present perfect tense as distinguished from the past perfect and future perfect tenses. 

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