roken

In a sentence

• Ik rookte een sigaret na het eten.

  I smoked a cigarette after dinner.

  Here, 'roken' is used in its literal sense to denote the act of smoking a cigarette.

• De schoorsteen rookt in de koude lucht.

  The chimney smokes in the cold air.

  In this sentence, 'roken' describes the phenomenon of smoke coming out of a chimney.

• Ik rook de geur van versgebakken brood.

  I smelled the scent of freshly baked bread.

  Here, 'roken' is used to indicate the act of detecting a smell, showing a figurative usage different from smoking.