Student or Learner
I think both have the same meaning. Are they interchangeable?
ex: This equation is related to/ have something to do with/ have to do with kinetic energy.
1 - This equation is related to kinetic energy.
2 - This equation has to do with kinetic energy.
3 - This equation has something to do with kinetic energy.
(1) indicates strongest connection; (2) is weaker than (1); (3) is weaker then (2).