capeweed vs weed

capeweed and weed both are nouns.

Word	Noun	Adjective	Verb	Adverb
capeweed	Yes	No	No	No
weed	Yes	No	Yes	No

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

capeweed: 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

capeweed (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

capeweed (verb)	weed (verb)
	clear of weeds