enable vs sap

enable

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

  • 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 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. 

sap

verb
  • To make unstable or infirm; to unsettle; to weaken. 

  • To subvert by digging or wearing away; to mine; to undermine; to destroy the foundation of. 

  • To proceed by mining, or by secretly undermining; to execute saps. 

  • To gradually weaken. 

  • To strike with a sap (with a blackjack). 

  • To exhaust the vitality of. 

  • To pierce with saps. 

  • To drain, suck or absorb from (tree, etc.). 

noun
  • A narrow ditch or trench made from the foremost parallel toward the glacis or covert way of a besieged place by digging under cover of gabions, etc. 

  • The sapwood, or alburnum, of a tree. 

  • The juice of plants of any kind, especially the ascending and descending juices or circulating fluid essential to nutrition. 

  • Vitality. 

  • A naive person; a simpleton 

  • Any juice. 

  • A short wooden club; a leather-covered hand weapon; a blackjack. 

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