cohesion vs solidity

cohesion

noun
  • Various intermolecular forces that hold solids and liquids together. 

  • Grammatical or lexical relationship between different parts of the same text. 

  • Growing together of normally distinct parts of a plant. 

  • State of cohering, or of working together. 

  • Degree to which functionally related elements in a system belong together. 

solidity

noun
  • The solid contents of a body; volume; amount of enclosed space. 

  • Moral firmness; validity; truth; certainty. 

  • The state or quality of being solid. 

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