Rudbeckia laciniata hortensia vs double gold

Rudbeckia laciniata hortensia and double gold both are nouns.

Word	Noun	Adjective	Verb	Adverb
Rudbeckia laciniata hortensia	Yes	No	No	No
double gold	Yes	No	No	No

As nouns, Rudbeckia laciniata hortensia and double gold are synonyms defined as:

Rudbeckia laciniata hortensia and double gold: very tall branching herb with showy much-doubled yellow flower heads

Other synonyms of Rudbeckia laciniata hortensia include golden glow, hortensia.

Rudbeckia laciniata hortensia (noun)	double gold (noun)
very tall branching herb with showy much-doubled yellow flower heads	very tall branching herb with showy much-doubled yellow flower heads