button quail vs wader

button quail and wader both are nouns.

Word	Noun	Adjective	Verb	Adverb
button quail	Yes	No	No	No
wader	Yes	No	No	No

As nouns, wader is a hypernym of button quail; that is, wader 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
wader: any of many long-legged birds that wade in water in search of food

Other hypernyms of button quail include wading bird.

button quail (noun)	wader (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