Balaeniceps rex vs wader

Balaeniceps rex and wader both are nouns.

Word	Noun	Adjective	Verb	Adverb
Balaeniceps rex	Yes	No	No	No
wader	Yes	No	No	No

As nouns, wader is a hypernym of Balaeniceps rex; that is, wader is a word with a broader meaning than Balaeniceps rex:

Balaeniceps rex: large stork-like bird of the valley of the White Nile with a broad bill suggesting a wooden shoe
wader: any of many long-legged birds that wade in water in search of food

Other hypernyms of Balaeniceps rex include wading bird.

Balaeniceps rex (noun)	wader (noun)
large stork-like bird of the valley of the White Nile with a broad bill suggesting a wooden shoe	any of many long-legged birds that wade in water in search of food