benweed vs weed

benweed and weed both are nouns.

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

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

benweed: widespread European weed having yellow daisylike flowers; sometimes an obnoxious weed and toxic to cattle if consumed in quantity
weed: any plant that crowds out cultivated plants

benweed (noun)	weed (noun)
widespread European weed having yellow daisylike flowers; sometimes an obnoxious weed and toxic to cattle if consumed in quantity	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

benweed (verb)	weed (verb)
	clear of weeds