A general visitor visa or an eTA allows an individual to stay in Canada for up to six months from the time they first enter the country. If they need to extend their stay, they need to apply for an extension and pay the fee again.
However, a super visa allows a parent or grandparent to visit their family in Canada and stay for up to two years without having to renew their status every six months. It is valid for 10 years or until the passport expires (if less than 10 years) and allows for multiple entries. The super visa is applicable for eligible parents and grandparents of the person living in Canada. Dependants of parents and grandparents are not eligible for the super visa.