diffuseness vs periphrase

diffuseness

noun
  • The state or quality of being diffuse. 

  • The result or product of being diffuse. 

periphrase

verb
  • To use circumlocution. 

  • To express by periphrase or circumlocution. 

noun
  • The use of more words than are necessary to express the idea; a roundabout, or indirect, way of speaking; circumlocution. 

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