Torx is a 6 pointed star pattern. There’s also a security torx with a post in the middle of the stars.
Hex is just a hexagon shape.
Robertson is a square.
Phillips is a cross but there’s also like 5 different types of cross fasteners Phillips is just the one that most referenced in America.
Slotted or flat head is just a single line across the fastener head.
I’m sure there’s more but these are the ones I know off the top of my head and are the main ones.
A quick primer in case you’re interested.
Torx is a 6 pointed star pattern. There’s also a security torx with a post in the middle of the stars. Hex is just a hexagon shape. Robertson is a square. Phillips is a cross but there’s also like 5 different types of cross fasteners Phillips is just the one that most referenced in America. Slotted or flat head is just a single line across the fastener head.
I’m sure there’s more but these are the ones I know off the top of my head and are the main ones.
Canada uses squares. They’re better than you’d think