groundsel vs weed

groundsel and weed both are nouns.

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

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

groundsel (noun)	weed (noun)
Eurasian weed with heads of small yellow flowers	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

groundsel (verb)	weed (verb)
	clear of weeds