A trickle is a tiny flow of liquid. Imagine turning on the tap in your kitchen just a tiny bit. If just a few drops come out, that is 'dripping'. When those drops become faster, then it is trickling. A waterjet can be several things. But always it implies that the water is coming out at high speed and high pressure. A waterjet is often a tool used for cleaning concrete or other surfaces. The water comes out very directed and with such pressure and focus, it blows dirt and debris away. It is usually a thin stream of water - but high pressure. A waterjet can be other things, but always it involves this high pressure usually narrow stream of water

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We had hoped to drink our full, but when we tried the flow was no more than a trickle. Even that small trickle of fuel from the leak in the tank was a concern. . The car wash was non-contact: directed water jets from all angles washed the car effectively. The high pressure inlet had a minute hole, but because of the pressure a waterjet ejected a fine mist into the air. As water blasters go, this was the mother of all: The waterjet would punch through building cladding if carelessly directed.