burning bush vs Kochia scoparia

burning bush and Kochia scoparia both are nouns.

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

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

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

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

burning bush (noun)	Kochia scoparia (noun)
(Old Testament) the bush that burned without being consumed and from which God spoke to Moses	densely branched Eurasian plant; foliage turns purple-red in autumn
densely branched Eurasian plant; foliage turns purple-red in autumn
deciduous shrub having purple capsules enclosing scarlet seeds
Eurasian perennial herb with white flowers that emit flammable vapor in hot weather