* High Tide: This is when the water level is at its highest point.

* Low Tide: This is when the water level is at its lowest point.

However, you might be thinking of different tidal phases which describe the specific points in the tidal cycle. Here's a breakdown:

High Tide:

* High High Tide (HHW): The highest point reached by the water during a tidal cycle.

* Low High Tide (LHW): The lower high tide in a region that experiences a double high tide.

Low Tide:

* High Low Tide (HLW): The higher low tide in a region that experiences a double low tide.

* Low Low Tide (LLW): The lowest point reached by the water during a tidal cycle.

Other terms related to tides:

* Spring Tides: These are especially high high tides and low low tides that occur when the Sun, Earth, and Moon are aligned.

* Neap Tides: These are less extreme tides with a smaller difference between high and low tides. They occur when the Sun, Earth, and Moon are at right angles to each other.

* Tidal Range: The difference in height between high tide and low tide.

Important Note: The specific timing and height of tides can vary greatly depending on the location and the position of the Moon and Sun.