Werkstudent or Internship on CV

Hello!

I recently finished a part time internship for 6 ish months at a startup where I took lead in building them a small framework for their needs. Since I am a non-eu student :(, we had to make it a werkstudent (Working student) job instead because I can't do legally do internships.

My question is would it be more valuable for me to put it as a werkstudent experience on my CV and to describe it as such or an internship? I'm happy to elaborate more on the actual responsibilities if that helps!

Thanks so much in advance!