commissioning vs designation

commissioning

noun
  • The process of assuring that all systems and components of a major piece of equipment, a process, a building or similar are designed, installed and tested according to the operational requirements of the owner or final client. 

designation

noun
  • Selection and appointment for a purpose or office; allotment; direction. 

  • signification, meaning, for example of a word or phrase. 

  • An act or instance of designating; a pointing out or showing; indication. 

  • That which designates; a distinguishing mark or name; distinctive title; appellation. 

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