yellow hawkweed vs Hieracium praealtum

yellow hawkweed and Hieracium praealtum both are nouns.

Word	Noun	Adjective	Verb	Adverb
yellow hawkweed	Yes	No	No	No
Hieracium praealtum	Yes	No	No	No

As nouns, yellow hawkweed and Hieracium praealtum are synonyms defined as:

yellow hawkweed and Hieracium praealtum: European hawkweed introduced into northeastern United States; locally troublesome weeds

Other synonyms of yellow hawkweed include king devil.

yellow hawkweed (noun)	Hieracium praealtum (noun)
European hawkweed introduced into northeastern United States; locally troublesome weeds	European hawkweed introduced into northeastern United States; locally troublesome weeds