Juncus effusus vs common rush

Juncus effusus and common rush both are nouns.

Word	Noun	Adjective	Verb	Adverb
Juncus effusus	Yes	No	No	No
common rush	Yes	No	No	No

As nouns, Juncus effusus and common rush are synonyms defined as:

Juncus effusus and common rush: tall rush with soft erect or arching stems found in Eurasia, Australia, New Zealand, and common in North America

Other synonyms of Juncus effusus include bullrush, bulrush, soft rush.

Juncus effusus (noun)	common rush (noun)
tall rush with soft erect or arching stems found in Eurasia, Australia, New Zealand, and common in North America	tall rush with soft erect or arching stems found in Eurasia, Australia, New Zealand, and common in North America