  Supersymmetry, shape invariance, exact solubility, and the factorization
method are often studied together in the literature. At the dawn of these
topics confusion was present in regards to their scope of applicability and the
relation among them. Considerable work have been put to study and resolve the
relation among two or more of these topics. These works are scattered over the
literature. While looking at the literature, one can not overlook the number of
places where authors confuse these terms, and concluding implications depending
on wrong assumptions of the relation between two or more of these topics. In
this letter we define supersymmetry, and shape invariance, and show the
relations which connects them to exact solubility and the factorization method,
referring to the literature for the respective detailed work and proofs. At
last we conclude our letter with a Venn diagram which illustrates those
relations.
