honeyflower vs Protea mellifera

honeyflower and Protea mellifera both are nouns.

Word	Noun	Adjective	Verb	Adverb
honeyflower	Yes	No	No	No
Protea mellifera	Yes	No	No	No

As nouns, honeyflower and Protea mellifera are synonyms defined as:

honeyflower and Protea mellifera: Australian shrub whose flowers yield honey copiously

Other synonyms of honeyflower include honey-flower.

honeyflower (noun)	Protea mellifera (noun)
Australian shrub whose flowers yield honey copiously	Australian shrub whose flowers yield honey copiously
erect bushy shrub of eastern Australia having terminal clusters of red flowers yielding much nectar