rosinweed vs Silphium laciniatum

rosinweed and Silphium laciniatum both are nouns.

Word	Noun	Adjective	Verb	Adverb
rosinweed	Yes	No	No	No
Silphium laciniatum	Yes	No	No	No

As nouns, rosinweed and Silphium laciniatum are synonyms defined as:

rosinweed and Silphium laciniatum: North American perennial having a resinous odor and yellow flowers

rosinweed (noun)	Silphium laciniatum (noun)
North American perennial having a resinous odor and yellow flowers	North American perennial having a resinous odor and yellow flowers
any of various western American plants of the genus Grindelia having resinous leaves and stems formerly used medicinally; often poisonous to livestock