This is the 3834th most frequent Swedish word.
kockar
Cooks.
Here, 'kockar' is used as a noun in plural form meaning 'chefs', referring to individuals who cook professionally.
Kockar arbetar ofta långa timmar i restaurangköken.
Chefs often work long hours in restaurant kitchens.
In this sentence, 'kockar' again is a plural noun and specifies the presence of individuals skilled in cooking.
Vi hade två kockar till middag, och de lagade utmärkt mat.
We had two chefs over for dinner, and they cooked excellent meals.
Here, 'kockar' is used as a verb in present tense, derived from the noun 'kock', expressing the act of cooking.