attenuated vs pencil-thin

attenuated

adj
  • Long and tapering (especially of leaves) 

  • Made, or become weak; subject to attenuation. 

pencil-thin

adj
  • Somewhat cylindrical and slender like a pencil; also, tall and thin. 

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