fullness vs richness

fullness

noun
  • Being full; completeness. 

  • The degree to which fate has become known. 

  • A measure of the degree to which a muscle has increased in size parallel to the axis of its contraction. A full muscle fills more of the space along the part of the body where it is connected. 

  • The degree to which a space is full. 

richness

noun
  • The state of having many examples or cases; abundance; profusion. 

  • The result or product of being rich. 

  • The number of types in a community. 

  • The state or quality of being rich; wealthiness, wealth. 

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