diagram

US /ˈdaɪ.ə.ɡræm/
UK /ˈdaɪ.ə.ɡræm/
"diagram" picture
1.

a simplified drawing showing the appearance, structure, or workings of something; a schematic representation.

:
The teacher drew a diagram of the human heart on the board.
Please refer to the circuit diagram for wiring instructions.
1.

to represent something in graphic form; to make a diagram of.

:
The architect will diagram the building's layout before construction begins.
It's easier to understand if you diagram the process.