shoebill vs wading bird

shoebill and wading bird both are nouns.

Word	Noun	Adjective	Verb	Adverb
shoebill	Yes	No	No	No
wading bird	Yes	No	No	No

As nouns, wading bird is a hypernym of shoebill; that is, wading bird is a word with a broader meaning than shoebill:

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

Other hypernyms of shoebill include wader.

shoebill (noun)	wading bird (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