enroll vs muster

enroll

verb
  • To enlist oneself (in something) or become a member (of something) 

  • To enter (a name, etc.) in a register, roll or list 

  • To enlist (someone) or make (someone) a member of 

muster

verb
  • To be gathered together for parade, inspection, exercise, or the like (especially of a military force); to come together as parts of a force or body. 

  • To enroll (into service). 

  • To collect, call or assemble together, such as troops or a group for inspection, orders, display etc. 

  • To gather or round up livestock. 

noun
  • An assemblage or display; a gathering, collection of people or things. 

  • The sum total of an army when assembled for review and inspection; the whole number of effective men in an army. 

  • A roundup of livestock for inspection, branding, drenching, shearing etc. 

  • A collection of peafowl. (not a term used in zoology) 

  • An assembling or review of troops, as for parade, verification of numbers, inspection, exercise, or introduction into service. 

  • Synonym of mustee 

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