The terms "basic" and "derived" are used in various contexts, particularly in physics, chemistry, and mathematics. To understand their meaning, you need to specify the context.

Please provide more information about what you're referring to, for example:

* In Physics: Are you asking about basic and derived physical quantities?

* In Chemistry: Are you asking about basic and derived units?

* In Mathematics: Are you asking about basic and derived functions?

Once you clarify the context, I can provide a more accurate and relevant explanation.