Answer 1

https://www.betterteam.com/full-stack-developer-job-description
Require hardwork. Please read the description about "full stack developer". I think you need advanced experience in technical, computer graphics as well as management field.
But in the case of "full stack web developer":
https://www.w3schools.com/whatis/whatis_fullstack.asp
"Full stack web developer" is the subset of "Full stack developer"