sargasso vs gulfweed

sargasso and gulfweed both are nouns.

Word	Noun	Adjective	Verb	Adverb
sargasso	Yes	No	No	No
gulfweed	Yes	No	No	No

As nouns, sargasso and gulfweed are synonyms defined as:

sargasso and gulfweed: brown algae with rounded bladders forming dense floating masses in tropical Atlantic waters as in the Sargasso Sea

Other synonyms of sargasso include sargassum, Sargassum bacciferum.

sargasso (noun)	gulfweed (noun)
brown algae with rounded bladders forming dense floating masses in tropical Atlantic waters as in the Sargasso Sea	brown algae with rounded bladders forming dense floating masses in tropical Atlantic waters as in the Sargasso Sea