regain vs repairment

regain

noun
  • The act or process of regaining something. 

  • The amount of width a woven cloth grows by when the fibers swell, used to determine the width of the reed to use in weaving. 

verb
  • To get back; to recover possession of. 

repairment

noun
  • The act of repairing. 

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