A person who wants to come to Canada as a tourist or to visit a family member is required to secure a Temporary Resident Visa, which is commonly called a Visitor Visa or simply a TRV.
A person who is not eligible to enter Canada due to medical, security or criminal reasons may still be allowed to enter the territory of Canada if the reason for entry is compelling due to current circumstances.
Open Work Permit is another type of Temporary Residence Program, that allows a foreign national who desires to work within the territory of Canada for a specified period of time.