saw palmetto vs Serenoa repens

saw palmetto and Serenoa repens both are nouns.

Word	Noun	Adjective	Verb	Adverb
saw palmetto	Yes	No	No	No
Serenoa repens	Yes	No	No	No

As nouns, saw palmetto and Serenoa repens are synonyms defined as:

saw palmetto and Serenoa repens: small hardy clump-forming spiny palm of southern United States

Other synonyms of saw palmetto include scrub palmetto.

saw palmetto (noun)	Serenoa repens (noun)
small hardy clump-forming spiny palm of southern United States	small hardy clump-forming spiny palm of southern United States