brownify vs russet

brownify

verb
  • To become brown due to increased levels of humic material. 

  • To cause to contain more racially 'brown' people, elements, or culture. 

  • To make or become more brown. 

russet

verb
  • To develop reddish-brown spots; to cause russeting. 

adj
  • The condition of leather when its treatment is complete, but it is not yet colored (stained) and polished. 

  • Rustic, homespun, coarse, plain. 

  • Having a rough skin that is reddish-brown or greyish; russeted. 

  • Having a reddish-brown color. 

noun
  • A variety of apple with rough, russet-colored skin. 

  • A coarse, reddish-brown, homespun fabric; clothes made with such fabric. 

  • A reddish-brown color. 

  • A variety of potato with rough, dark gray-brown skin. 

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