sandpiper vs shorebird

sandpiper and shorebird both are nouns.

Word	Noun	Adjective	Verb	Adverb
sandpiper	Yes	No	No	No
shorebird	Yes	No	No	No

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

sandpiper: any of numerous usually small wading birds having a slender bill and piping call; closely related to the plovers
shorebird: any of numerous wading birds that frequent mostly seashores and estuaries

Other hypernyms of sandpiper include limicoline bird, shore bird.

sandpiper (noun)	shorebird (noun)
any of numerous usually small wading birds having a slender bill and piping call; closely related to the plovers	any of numerous wading birds that frequent mostly seashores and estuaries