Living together in cramped quarters often causes friction, and sometimes fights - both physical and verbal - break out.

Though trade friction would probably crimp the company’s exports, she wouldn’t talk about what may come down the pike.

The friction is represented by the choice between his use of an acoustic and electric guitar, and Dylan's lyrics gradually become bolder and more reflective of the world he sees around him.

That kind of situation could easily create friction between the two players, but Duran says he is happy to play whatever role the team needs him to.

They have become a source of friction in the low-lying Pacific Islands, which are among the nations most vulnerable to climate change.