Erechtites hieracifolia vs weed

Erechtites hieracifolia and weed both are nouns.

Word	Noun	Adjective	Verb	Adverb
Erechtites hieracifolia	Yes	No	No	No
weed	Yes	No	Yes	No

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

Erechtites hieracifolia: an American weedy plant with small white or greenish flowers
weed: any plant that crowds out cultivated plants

Erechtites hieracifolia (noun)	weed (noun)
an American weedy plant with small white or greenish 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

Erechtites hieracifolia (verb)	weed (verb)
	clear of weeds