kelpwort vs glasswort

kelpwort and glasswort both are nouns.

Word	Noun	Adjective	Verb	Adverb
kelpwort	Yes	No	No	No
glasswort	Yes	No	No	No

As nouns, kelpwort and glasswort are synonyms defined as:

kelpwort and glasswort: bushy plant of Old World salt marshes and sea beaches having prickly leaves; burned to produce a crude soda ash

Other synonyms of kelpwort include barilla, kali, Salsola kali, Salsola soda, saltwort.

kelpwort (noun)	glasswort (noun)
bushy plant of Old World salt marshes and sea beaches having prickly leaves; burned to produce a crude soda ash	fleshy maritime plant having fleshy stems with rudimentary scalelike leaves and small spikes of minute flowers; formerly used in making glass
	bushy plant of Old World salt marshes and sea beaches having prickly leaves; burned to produce a crude soda ash