rapport

noun

1. (countable, uncountable)A relationship of mutual trust and respect; a close and harmonious relationship in which the people or groups concerned understand each other's feelings or ideas and communicate well.

   “He always tried to maintain a rapport with his customers.”

   “"You can't have less than nothing. They ignore them altogether. Some time ago I had a series of cases of telepathic rapport which I wished to lay before the Royal Society."”

   “She'd expected to sleep fitfully. Her bunk was in an alcove separated from the others physically by a server partition and sonically by an extra-loud electronic hum, which didn't surprise her since she'd only started attempting a chummier rapport with her troops in the year which hadn't happened.”

2. (countable, uncountable)Relation; proportion; conformity.

   “'Tis obvious enough, what rapport there is, and muſt ever be, between the Thoughts and Words, the Conceptions and Languages of every Country, [...]”