There are compression ring and oil control ring
colour, pattern, size-related attribute, flavor, mass, speed, pH, magnetic, polarization and substance attribute
The two types of guards are the point guard and the shooting guard, and the two different types of forwards are small forwards and power forwards.
Eggs and sperm
Two types. By saying there are two 'types' you are already stating that there are 2 differentthings and so the word 'different' isn't necessary.