ad hoc vs provisional

ad hoc

adj
  • For a particular purpose. 

  • Created on the spur of the moment; impromptu. 

  • Independent of previously instated network structure, like routers or access points. 

  • Postulated solely to save a theory from being falsified, without making any new predictions. 

adv
  • On the spur of the moment. 

  • For a particular purpose. 

provisional

adj
  • Temporary, but with the intention of eventually becoming permanent or being replaced by a permanent equivalent. 

noun
  • A postage stamp issued locally before an official issue is released. 

  • An interim denture. 

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