procural vs purchasing

procural

noun
  • The act of procuring something. 

purchasing

noun
  • An act or process of making a purchase. 

  • A part of an organization that manages such processes 

  • A complex, organized process in large organizations for obtaining goods that may include identification of requirements, approvals, supplier management, negotiation, receipt of goods, and payment. 

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