California dandelion vs weed

California dandelion and weed both are nouns.

Word	Noun	Adjective	Verb	Adverb
California dandelion	Yes	No	No	No
weed	Yes	No	Yes	No

As nouns, weed is a hypernym of California dandelion; that is, weed is a word with a broader meaning than California dandelion:

California dandelion: European weed widely naturalized in North America having yellow flower heads and leaves resembling a cat's ears
weed: any plant that crowds out cultivated plants

California dandelion (noun)	weed (noun)
European weed widely naturalized in North America having yellow flower heads and leaves resembling a cat's ears	street names for marijuana
	a black band worn by a man (on the arm or hat) as a sign of mourning
	any plant that crowds out cultivated plants

California dandelion (verb)	weed (verb)
	clear of weeds