An area chart is really similar to a line chart, except that the area between the x axis and the line is filled in with color or shading. It represents the evolution of a numerical variable following another numerical variable. If you

want to represent this evolution for several groups in the same time, you are probably interested by stacked area chart, where every groups are displayed one of top of each other. Note that an interesting alternative is probably

to use faceting. In python, area chart can be done using the fillbetween function of matplotlib. The stackplot function could work as well, but it is more adapted for stacked area charts.