wading bird vs flamingo

wading bird and flamingo both are nouns.

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

As nouns, flamingo is a hyponym of wading bird; that is, flamingo is a word with a more specific, narrower meaning than wading bird:

wading bird: any of many long-legged birds that wade in water in search of food
flamingo: large pink to scarlet web-footed wading bird with down-bent bill; inhabits brackish lakes

wading bird (noun)	flamingo (noun)
any of many long-legged birds that wade in water in search of food	large pink to scarlet web-footed wading bird with down-bent bill; inhabits brackish lakes