bladder fucus vs black rockweed

bladder fucus and black rockweed both are nouns.

Word	Noun	Adjective	Verb	Adverb
bladder fucus	Yes	No	No	No
black rockweed	Yes	No	No	No

As nouns, bladder fucus and black rockweed are synonyms defined as:

bladder fucus and black rockweed: a common rockweed used in preparing kelp and as manure

Other synonyms of bladder fucus include bladderwrack, Fucus vesiculosus, tang.

bladder fucus (noun)	black rockweed (noun)
a common rockweed used in preparing kelp and as manure	a common rockweed used in preparing kelp and as manure