attenuate vs broad

attenuate

adj
  • Gradually tapering into a petiole-like extension toward the base. 

verb
  • To reduce the amplitude of an electrical, radio, or optical signal. 

  • To weaken. 

  • To reduce in size, force, value, amount, or degree. 

  • To become thin or fine; to grow less. 

  • To rarefy. 

  • (of a beer) To become less dense as a result of the conversion of sugar to alcohol. 

  • To reduce the virulence of a bacterium or virus. 

  • To make thinner, as by physically reshaping, starving, or decaying. 

broad

adj
  • Extended, in the sense of diffused; open; clear; full. 

  • General rather than specific. 

  • Comprehensive; liberal; enlarged. 

  • Having a large measure of any thing or quality; unlimited; unrestrained. 

  • Unsubtle; obvious. 

  • Plain; evident. 

  • Free; unrestrained; unconfined. 

  • Strongly regional. 

  • Wide in extent or scope. 

  • Velarized, i.e. not palatalized. 

noun
  • A British gold coin worth 20 shillings, issued by the Commonwealth of England in 1656. 

  • A shallow lake, one of a number of bodies of water in eastern Norfolk and Suffolk. 

  • A lathe tool for turning down the insides and bottoms of cylinders. 

  • A kind of floodlight. 

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