Himantopus stilt vs shorebird

Himantopus stilt and shorebird both are nouns.

Word	Noun	Adjective	Verb	Adverb
Himantopus stilt	Yes	No	No	No
shorebird	Yes	No	No	No

As nouns, shorebird is a hypernym of Himantopus stilt; that is, shorebird is a word with a broader meaning than Himantopus stilt:

Himantopus stilt: long-legged three-toed black-and-white wading bird of inland ponds and marshes or brackish lagoons
shorebird: any of numerous wading birds that frequent mostly seashores and estuaries

Other hypernyms of Himantopus stilt include limicoline bird, shore bird.

Himantopus stilt (noun)	shorebird (noun)
long-legged three-toed black-and-white wading bird of inland ponds and marshes or brackish lagoons	any of numerous wading birds that frequent mostly seashores and estuaries