diffusive vs radial

diffusive

adj
  • That diffuses something; disseminating. 

  • That is spread or dispersed across a wide area or among a large number of people. 

  • Involving or employing many words; expansive, discursive; (in negative sense) long-winded. 

  • Pertaining to diffusion. 

radial

adj
  • Arranged like rays that radiate from, or converge to a common centre. 

  • Developing uniformly on all sides. 

  • Moving along a radius. 

  • Of, or relating to the radius bone. 

  • Of, or relating to the radius (vein), and/or the wing areas next to it. 

noun
  • A radial tire / radial tyre. 

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