Yes KS(Kolmogorov-Smirnow) is a nonparametric statistical test method (for continuous distribution). There should be no connection between ks tests. KS test, named after two mathematicians in the Soviet Union, Kolmogorov and smirnoff, is a goodness-of-fit test. KS test judges whether the observation results of the sample come from the population of the given distribution by analyzing the differences between the two distributions.