Sometimes it is useful to plot the distribution of several variables on the same plot to compare them. This is possible using the kdeplot function of seaborn several times:
# library and dataset
import seaborn as sns
df = sns.load_dataset('iris')
# plot of 2 variables
p1=sns.kdeplot(df['sepal_width'], shade=True, color="r")
p1=sns.kdeplot(df['sepal_length'], shade=True, color="b")
#sns.plt.show()
