Difference between Condition category - Freight or Delivery costs

Hi All Experts,

When I create a new condition type, how can I be sure whether the condition category for it should be 'F' i.e. Frieght or 'B' i.e. Delivery costs.

I tried to search on SCN/google but could not get the answer.

What is the difference between Freight and Delivery costs condition category?

Thanks

Harsh Aggarwal