black saltwort vs sea trifoly

black saltwort and sea trifoly both are nouns.

Word	Noun	Adjective	Verb	Adverb
black saltwort	Yes	No	No	No
sea trifoly	Yes	No	No	No

As nouns, black saltwort and sea trifoly are synonyms defined as:

black saltwort and sea trifoly: a small fleshy herb common along North American seashores and in brackish marshes having pink or white flowers

Other synonyms of black saltwort include Glaux maritima, sea milkwort.

black saltwort (noun)	sea trifoly (noun)
a small fleshy herb common along North American seashores and in brackish marshes having pink or white flowers	a small fleshy herb common along North American seashores and in brackish marshes having pink or white flowers