Graph, chart (7)
I believe the answer is:
diagram
I believe this is a double definition.
'graph' is the first definition.
(thesaurus)
'chart' is the second definition.
(I've seen this before)
(Other definitions for diagram that I've seen before include "Drawing or blueprint" , "Simplified drawing" , "Outline drawing showing parts or workings" , "Explanatory illustration" , "Line drawing" .)