sweet vetch vs Hedysarum boreale

sweet vetch and Hedysarum boreale both are nouns.

Word	Noun	Adjective	Verb	Adverb
sweet vetch	Yes	No	No	No
Hedysarum boreale	Yes	No	No	No

As nouns, sweet vetch and Hedysarum boreale are synonyms defined as:

sweet vetch and Hedysarum boreale: perennial of western United States having racemes of pink to purple flowers followed by flat pods that separate into nearly orbicular joints

sweet vetch (noun)	Hedysarum boreale (noun)
perennial of western United States having racemes of pink to purple flowers followed by flat pods that separate into nearly orbicular joints	perennial of western United States having racemes of pink to purple flowers followed by flat pods that separate into nearly orbicular joints