Difference between Fusion Purchasing and Fusion Procurement

When we look at our licenses we see licenses for Fusion Procurement and Fusion Purchasing - what is the difference between the two if any?

We are getting ready to add some additional licenses and we would like to know if there is any difference between Fusion Procurement and Fusion Purchasing - if so what is the difference? Would anyone be able to tell me?

Version (include the version you are using, if applicable):

22B (11.13.22.04.0)

Code Snippet (add any code snippets that support your topic, if applicable):