Elodea as a noun is any of several underwater freshwater perennials, of the genus elodea, that have grasslike leaves; ditchmoss or pondweed while Pondweed as a noun is any plant of the genus potamogeton, that grows in ponds or similar aquatic conditions; extended to other similar plants.
Part of speech: noun
Definition: Any of several underwater freshwater perennials, of the genus Elodea, that have grasslike leaves; ditchmoss or pondweed
Part of speech: noun
Definition: Any plant of the genus Potamogeton, that grows in ponds or similar aquatic conditions; extended to other similar plants.
We hope you now know whether to use Elodea or Pondweed in your sentence.