plain wanderer vs wader

plain wanderer and wader both are nouns.

Word	Noun	Adjective	Verb	Adverb
plain wanderer	Yes	No	No	No
wader	Yes	No	No	No

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

plain wanderer: small Australian bird related to the button quail; classified as wading bird but inhabits plains
wader: any of many long-legged birds that wade in water in search of food

Other hypernyms of plain wanderer include wading bird.

plain wanderer (noun)	wader (noun)
small Australian bird related to the button quail; classified as wading bird but inhabits plains	any of many long-legged birds that wade in water in search of food