penstock

As nouns the difference between penstock and headstock

is that penstock is a sluice or pipe which allows the controlled flow of water from behind a dam, typically routing it to a turbine of a power plant while headstock is {{cx|mining|lang=en}} A headframe.

As nouns the difference between penstock and sluicegate

is that penstock is a sluice or pipe which allows the controlled flow of water from behind a dam, typically routing it to a turbine of a power plant while sluicegate is .

As nouns the difference between pipeline and penstock

is that pipeline is a conduit made of pipes used to convey water, gas or petroleum etc while penstock is a sluice or pipe which allows the controlled flow of water from behind a dam, typically routing it to a turbine of a power plant.

As a verb pipeline

is to convey something by a system of pipes.