sweet rocket vs Hesperis

sweet rocket and Hesperis both are nouns.

Word	Noun	Adjective	Verb	Adverb
sweet rocket	Yes	No	No	No
Hesperis	Yes	No	No	No

sweet rocket (noun)	Hesperis (noun)
long cultivated herb having flowers whose scent is more pronounced in the evening; naturalized throughout Europe to Siberia and into North America	biennial or perennial erect herbs having nocturnally fragrant flowers