ダイヤグラム
ダイヤグラム · daiyaguramu · JLPT N2 · noun
diagram
📊 Greek dia- (across) + graphein (write): a diagram is writing laid out across lines
In Japanese, ダイヤグラム is often shortened to ダイヤ, which also means a railway timetable. Both come from the same English root, so the shortened form keeps the diagram meaning.