corn spurry vs weed

corn spurry and weed both are nouns.

Word	Noun	Adjective	Verb	Adverb
corn spurry	Yes	No	No	No
weed	Yes	No	Yes	No

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

corn spurry (noun)	weed (noun)
small European weed with whorled leaves and white 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

corn spurry (verb)	weed (verb)
	clear of weeds