Vallisneria spiralis and Water plant

Vallisneria spiralis noun - Submerged aquatic plant with ribbonlike leaves; Old World and Australia.

Water plant and Vallisneria spiralis are semantically related. In some cases you can use "Water plant" instead a noun phrase "Vallisneria spiralis".

Water plant noun - A plant that grows partly or wholly in water whether rooted in the mud, as a lotus, or floating without anchorage, as the water hyacinth.

Vallisneria spiralis and water plant are semantically related. Sometimes you can replace phrase "Vallisneria spiralis" with "Water plant", this phrases are similar.