ditchmoss vs Elodea

ditchmoss and Elodea both are nouns.

Word	Noun	Adjective	Verb	Adverb
ditchmoss	Yes	No	No	No
Elodea	Yes	No	No	No

As nouns, ditchmoss and Elodea are synonyms defined as:

Other synonyms of ditchmoss include genus Elodea, pondweed.

ditchmoss (noun)	Elodea (noun)
submerged freshwater perennials	submerged freshwater perennials