red-flowered silky oak vs Grevillea banksii

red-flowered silky oak and Grevillea banksii both are nouns.

Word	Noun	Adjective	Verb	Adverb
red-flowered silky oak	Yes	No	No	No
Grevillea banksii	Yes	No	No	No

As nouns, red-flowered silky oak and Grevillea banksii are synonyms defined as:

red-flowered silky oak and Grevillea banksii: tall shrub with cylindrical racemes of red flowers and pinnatifid leaves silky and grey beneath; eastern Australia

red-flowered silky oak (noun)	Grevillea banksii (noun)
tall shrub with cylindrical racemes of red flowers and pinnatifid leaves silky and grey beneath; eastern Australia	tall shrub with cylindrical racemes of red flowers and pinnatifid leaves silky and grey beneath; eastern Australia