Hedysarum boreale vs sweet vetch

Hedysarum boreale and sweet vetch both are nouns.

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

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

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

Hedysarum boreale (noun)	sweet vetch (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