Hieracium praealtum vs king devil

Hieracium praealtum and king devil both are nouns.

Word	Noun	Adjective	Verb	Adverb
Hieracium praealtum	Yes	No	No	No
king devil	Yes	No	No	No

As nouns, Hieracium praealtum and king devil are synonyms defined as:

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

Other synonyms of Hieracium praealtum include yellow hawkweed.

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