dearth vs sparseness

dearth

noun
  • Scarcity; a lack or short supply. 

  • A period or condition when food is rare and hence expensive; famine. 

sparseness

noun
  • The state or quality of being sparse. 

  • The result or product of being sparse. 

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