węgiel drzewny in English:

charcoal for the barbecue

Dad cooked the meat over a charcoal fire.

charcoal-grilled steaks; a charcoal drawing

The artist is using charcoal to draw the woman's portrait.

I prefer sketching in charcoal to pencil.

The uniform is charcoal (grey) (= dark grey) and red.

... between the reflectivity of charcoal and wet sand.

When I moved into my new home, I just brought with me the things that I needed for cooking, an earthen rice cooker, an earthenware pot and an earthen charcoal brazier.