button quail vs wading bird

button quail and wading bird both are nouns.

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

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

button 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 button quail include wader.

button 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