Plot, chart (5)
I believe the answer is:
graph
I believe this is a double definition.
'plot' is the first definition.
(I know this)
'chart' is the second definition.
(I know that chart can be written as graph)
(Other definitions for graph that I've seen before include "Mathematical plot" , "Diagram representing relationships between quantities" , "Mathematical diagram" , "A plotted chart" , "Diagram showing relationships between things" .)