sky

In a sentence

• Himlen täcktes av mörka skyar innan stormen.

  The sky was covered by dark clouds before the storm.

  Here, "skyar" is used to mean 'clouds', referring to weather clouds in the sky.

• Hans ord försvann i det blå skyn.

  His words vanished into the blue sky.

  In this sentence, "skyn" refers to 'the sky', meaning the vast expanse over the earth.

• Hon såg en sky av rök stiga från skorstenen.

  She saw a plume of smoke rise from the chimney.

  Here, "sky" is utilized metaphorically to mean 'a plume', referring to the rising smoke pattern.