chummy vs interactional

chummy

adj
  • Friendly; on, or trying to be on, intimate terms. 

noun
  • Synonym of chum (“friend, pal”) 

  • Nickname for a person, especially a suspect or criminal. 

interactional

adj
  • Of, pertaining to, or featuring interaction. 

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