Lateral line and Sense organ

Lateral line noun - Sense organs of fish and amphibians; believed to detect pressure changes in the water.

Sense organ and lateral line are semantically related. In some cases you can use "Sense organ" instead a noun phrase "Lateral line".

Sense organ noun - An organ having nerve endings (in the skin or viscera or eye or ear or nose or mouth) that respond to stimulation.

Lateral line and sense organ are semantically related. Sometimes you can replace phrase "Lateral line" with "Sense organ", this phrases are similar.