The return hose is the upper radiator hose.

The lower radiator hose is a (relatively) short, fitted hose which goes from the lower radiator to a pipe. This pipe is the heater by-pass/return. There is another fitted hose leading up to the thermostat housing.

The lower hose can be changed without removing anything although removal of the alternator simplifies the task.

The by-pass hose is a horse of a different color. It CAN be done and I have done it ONCE (but never again!!) without moving the compressor.

You need to determine exactly which hose you are replacing before you start randomly removing parts.

There is also a short straight hose connecting the thermostat housing to the water pump housing.

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“Whatever story you're telling, it will be more interesting if, at the end you add, "and then everything burst into flames.”
― Brian P. Cleary, You Oughta Know By Now