adequateness vs plenitude

adequateness

noun
  • The quality of being adequate, of meeting needs or expectations. 

plenitude

noun
  • Fullness; completeness. 

  • Fullness (of the moon). 

  • The metaphysical idea that the universe contains everything that is possible. 

  • An abundance; a full supply. 

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