charcoal

nouns

a carbonaceous material obtained by heating wood or other organic matter in the absence of air
a stick of black carbon material used for drawing
a drawing made with a stick of black carbon material
is a type of (narrower)
a representation of forms or objects on a surface by means of lines
"drawings of abstract forms"; "he did complicated pen-and-ink drawings like medieval miniatures"

verbs

draw, trace, or represent with charcoal
entails
make a mark or lines on a surface
"draw a line"; "trace the outline of a figure in the sand"
domain category
the creation of beautiful or significant things
"art does not need to be innovative to be good"; "I was never any good at art"; "he said that architecture is the art of wasting space beautifully"
is a type of (narrower)
represent by making a drawing of, as with a pencil, chalk, etc. on a surface
"She drew an elephant"; "Draw me a horse"

adjectives

of a very dark grey