Hieracium venosum vs rattlesnake weed

Hieracium venosum and rattlesnake weed both are nouns.

Word	Noun	Adjective	Verb	Adverb
Hieracium venosum	Yes	No	No	No
rattlesnake weed	Yes	No	No	No

As nouns, Hieracium venosum and rattlesnake weed are synonyms defined as:

Hieracium venosum and rattlesnake weed: a hawkweed with a rosette of purple-veined basal leaves; Canada to northern Georgia and Kentucky

Hieracium venosum (noun)	rattlesnake weed (noun)
a hawkweed with a rosette of purple-veined basal leaves; Canada to northern Georgia and Kentucky	a hawkweed with a rosette of purple-veined basal leaves; Canada to northern Georgia and Kentucky