Chef, cook (noun) = kock
Cook (verb) = laga [mat] (mat = food)
I'm cooking / I cook = Jag lagar mat
I'm cooking pasta / I cook pasta = Jag lagar pasta
Boss/chief/manager/director/etc. = chef (or one of several other words depending on context)
But the word chef in Swedish means boss or manager in English. It comes up (at least) in the Business skill.