dyer's rocket vs reseda

dyer's rocket and reseda both are nouns.

Word	Noun	Adjective	Verb	Adverb
dyer's rocket	Yes	No	No	No
reseda	Yes	No	No	No

As nouns, reseda is a hypernym of dyer's rocket; that is, reseda is a word with a broader meaning than dyer's rocket:

dyer's rocket: European mignonette cultivated as a source of yellow dye; naturalized in North America
reseda: any plant of the genus Reseda

dyer's rocket (noun)	reseda (noun)
European mignonette cultivated as a source of yellow dye; naturalized in North America	any plant of the genus Reseda