diffusive vs lengthy

diffusive

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

  • That diffuses something; disseminating. 

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

  • Pertaining to diffusion. 

lengthy

adj
  • Speaking or writing at length; long-winded. 

  • Having length; long and overextended, especially in time rather than dimension. 

  • a lengthy text 

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