Fucus vesiculosus vs bladderwrack

Fucus vesiculosus and bladderwrack both are nouns.

Word	Noun	Adjective	Verb	Adverb
Fucus vesiculosus	Yes	No	No	No
bladderwrack	Yes	No	No	No

As nouns, Fucus vesiculosus and bladderwrack are synonyms defined as:

Fucus vesiculosus and bladderwrack: a common rockweed used in preparing kelp and as manure

Other synonyms of Fucus vesiculosus include black rockweed, bladder fucus, tang.

Fucus vesiculosus (noun)	bladderwrack (noun)
a common rockweed used in preparing kelp and as manure	a common rockweed used in preparing kelp and as manure
	similar to and found with black rockweed