fire bush vs Kochia scoparia

fire bush and Kochia scoparia both are nouns.

Word	Noun	Adjective	Verb	Adverb
fire bush	Yes	No	No	No
Kochia scoparia	Yes	No	No	No

As nouns, fire bush and Kochia scoparia are synonyms defined as:

fire bush and Kochia scoparia: densely branched Eurasian plant; foliage turns purple-red in autumn

Other synonyms of fire bush include Bassia scoparia, belvedere, burning bush, fire-bush, summer cypress.

fire bush (noun)	Kochia scoparia (noun)
densely branched Eurasian plant; foliage turns purple-red in autumn	densely branched Eurasian plant; foliage turns purple-red in autumn
evergreen South American shrub having showy trumpet-shaped orange flowers; grown as an ornamental or houseplant