serrated wrack vs Fucus serratus

serrated wrack and Fucus serratus both are nouns.

Word	Noun	Adjective	Verb	Adverb
serrated wrack	Yes	No	No	No
Fucus serratus	Yes	No	No	No

As nouns, serrated wrack and Fucus serratus are synonyms defined as:

serrated wrack and Fucus serratus: brown algae seaweed with serrated edges

Other synonyms of serrated wrack include tang.

serrated wrack (noun)	Fucus serratus (noun)
brown algae seaweed with serrated edges	brown algae seaweed with serrated edges