Falling tide and Low tide

Low tide and falling tide are semantically related in tide topic. In some cases you can use "Low tide" instead a noun phrase "Falling tide", when it comes to topics like high tide, ebb tide.

Low tide noun - The lowest (farthest) ebb of the tide.

Falling tide and low tide are semantically related in tide topic. You can use "Falling tide" instead a noun phrase "Low tide", if it concerns topics such as high tide, ebb tide.