bustard quail vs wading bird

bustard quail and wading bird both are nouns.

Word	Noun	Adjective	Verb	Adverb
bustard quail	Yes	No	No	No
wading bird	Yes	No	No	No

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

bustard quail: small quail-like terrestrial bird of southern Eurasia and northern Africa that lacks a hind toe; classified with wading birds but inhabits grassy plains
wading bird: any of many long-legged birds that wade in water in search of food

Other hypernyms of bustard quail include wader.

bustard quail (noun)	wading bird (noun)
small quail-like terrestrial bird of southern Eurasia and northern Africa that lacks a hind toe; classified with wading birds but inhabits grassy plains	any of many long-legged birds that wade in water in search of food