approve vs enable

approve

verb
  • To officially sanction; to ratify; to confirm; to set as satisfactory. 

  • To make profit of; to convert to one's own profit — said especially of waste or common land appropriated by the lord of the manor. 

  • To consider worthy (to); to be pleased (with); to accept. 

  • To regard as good; to commend; to be pleased with; to think well of. 

enable

verb
  • To qualify or approve for some role or position; to render sanction or authorization to; to confirm suitability for. 

  • To yield the opportunity or provide the possibility for something; to provide with means, opportunities, and the like. 

  • To imply or tacitly confer excuse for an action or a behavior. 

  • To activate, to make operational (especially of a function of an electronic or mechanical device). 

  • To affirm; to make firm and strong. 

  • To put a circuit element into action by supplying a suitable input pulse. 

  • To make somebody able (to do, or to be, something); to give sufficient ability or power to do or to be; to give strength or ability to. 

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