attachment vs cohabitation

attachment

noun
  • A strong bonding with or fondness for someone or something. 

  • The means by which something is physically attached. 

  • Taking a person's property to satisfy a court-ordered debt. 

  • A device attached to a piece of equipment or a tool. 

  • The act or process of (physically or figuratively) attaching. 

  • A file sent along with a message, usually an email. 

  • The act or process by which any (downward) leader connects to any available (upward) streamer in a lightning flash. 

  • A dependence, especially a strong one. 

cohabitation

noun
  • An emotional and physical intimate relationship which includes a common living place and which exists without legal or religious sanction. 

  • A place where two or more individuals reside together. 

  • The act of living together. 

  • The act of two species living together in the same habitat. 

  • Cooperation between politicians of opposing political parties; especially, in France, between a President and Prime Minister. 

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