limpkin vs wader

limpkin and wader both are nouns.

Word	Noun	Adjective	Verb	Adverb
limpkin	Yes	No	No	No
wader	Yes	No	No	No

As nouns, wader is a hypernym of limpkin; that is, wader is a word with a broader meaning than limpkin:

limpkin: wading bird of Florida, Cuba and Jamaica having a drooping bill and a distinctive wailing call
wader: any of many long-legged birds that wade in water in search of food

Other hypernyms of limpkin include wading bird.

limpkin (noun)	wader (noun)
wading bird of Florida, Cuba and Jamaica having a drooping bill and a distinctive wailing call	any of many long-legged birds that wade in water in search of food