The Arithmetic Calculations and Statistical Procedures for (A) the Test

The arithmetic calculations and statistical procedures for (a) the test of homogeneity and (b) the test of independence are the same.
a)Explain in a few sentences what distinguishes these two hypothesis tests.
b)To illustrate your answer in part (a), make up an example of a research question that would require a test of homogeneity, and an example that would require a test of independence. Briefly describe the aspects of your examples that illustrate the distinguishing characteristics you mentioned in part (a).