allotment vs issuance

allotment

noun
  • The act of allotting. 

  • The allowance of a specific amount of money or other credit of a particular thing to a particular person. 

  • A plot of land rented from the council for growing fruit and vegetables. 

  • Something allotted; a share, part, or portion granted or distributed 

issuance

noun
  • The act of issuing, or giving out. 

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