wooly blue curls vs blue curls

wooly blue curls and blue curls both are nouns.

Word	Noun	Adjective	Verb	Adverb
wooly blue curls	Yes	No	No	No
blue curls	Yes	No	No	No

As nouns, blue curls is a hypernym of wooly blue curls; that is, blue curls is a word with a broader meaning than wooly blue curls:

wooly blue curls: an aromatic plant with wooly leaves found in southern California and Mexico
blue curls: any of several plants of the genus Trichostema having whorls of small blue flowers

wooly blue curls (noun)	blue curls (noun)
an aromatic plant with wooly leaves found in southern California and Mexico	any of several plants of the genus Trichostema having whorls of small blue flowers