closeness vs synonymia

closeness

noun
  • The state of being mean or stingy 

  • The shortest path between two vertices in a graph 

  • The state of being close (all senses) 

  • The state of being friends 

  • The state of being secretive 

synonymia

noun
  • The use of two or more synonyms together to amplify or explain a given subject or term. A kind of repetition that adds force. 

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