connectedness

noun

a relation between things or events (as in the case of one causing the other or sharing features with it)
物事または出来事の関連（例えば1つがもう一方を引き起こす、あるいは1つがもう一方と共通点を持つ）
- there was a connection between eating that pickle and having that nightmare
  あのピクルスを食べたこととあんな悪夢を見たことには関連があった
the state of being connected
関係があること
- the connection between church and state is inescapable
  教会と国家の癒着は避けられない