attenuated vs impaired

attenuated

adj
  • Made, or become weak; subject to attenuation. 

  • Long and tapering (especially of leaves) 

impaired

adj
  • Rendered less effective. 

  • inebriated, drunk. 

noun
  • A criminal charge for driving a vehicle while impaired. 

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