rök

rök

Smoke.

Here, 'rök' is used as a noun meaning 'smoke'.

Det steg rök från skorstenen.

Smoke rose from the chimney.

In this instance, 'rök' is a noun referring to 'a cigarette or smoking'.

Han tog en rök efter lunchen.

He had a smoke after lunch.

In this sentence, 'röker' is a verb derived from 'rök', meaning 'to smoke' or 'to cure by smoking'.

Kocken röker fisken för att ge den smak.

The chef is smoking the fish to add flavor.