Charadrius morinellus vs plover

Charadrius morinellus and plover both are nouns.

Word	Noun	Adjective	Verb	Adverb
Charadrius morinellus	Yes	No	No	No
plover	Yes	No	No	No

As nouns, plover is a hypernym of Charadrius morinellus; that is, plover is a word with a broader meaning than Charadrius morinellus:

Charadrius morinellus: rare plover of upland areas of Eurasia
plover: any of numerous chiefly shorebirds of relatively compact build having straight bills and large pointed wings; closely related to the sandpipers

Charadrius morinellus (noun)	plover (noun)
rare plover of upland areas of Eurasia	any of numerous chiefly shorebirds of relatively compact build having straight bills and large pointed wings; closely related to the sandpipers