sanderling vs sandpiper

sanderling and sandpiper both are nouns.

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

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

sanderling: small sandpiper that breeds in the Arctic and migrates southward along sandy coasts in most of world
sandpiper: any of numerous usually small wading birds having a slender bill and piping call; closely related to the plovers

sanderling (noun)	sandpiper (noun)
small sandpiper that breeds in the Arctic and migrates southward along sandy coasts in most of world	any of numerous usually small wading birds having a slender bill and piping call; closely related to the plovers