secretary bird vs Sagittarius serpentarius

secretary bird and Sagittarius serpentarius both are nouns.

Word	Noun	Adjective	Verb	Adverb
secretary bird	Yes	No	No	No
Sagittarius serpentarius	Yes	No	No	No

As nouns, secretary bird and Sagittarius serpentarius are synonyms defined as:

secretary bird and Sagittarius serpentarius: large long-legged African bird of prey that feeds on reptiles

secretary bird (noun)	Sagittarius serpentarius (noun)
large long-legged African bird of prey that feeds on reptiles	large long-legged African bird of prey that feeds on reptiles