Both geoms and stats can be used to make plots in the R package ggplot2, and they often give similar results (e.g., geom_area and stat_bin). They also often have slightly di
geom is for geometrical representation while stat is for statistical infos and representations. i think sometimes geom uses some stats functions such as stat_count() used by geom_bar(). in this case geom_bar takes one argument (x or y) and the stat_count takes in charge the counting of frequencies.