kaki vs Himantopus stilt

kaki and Himantopus stilt both are nouns.

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

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

kaki: blackish stilt of New Zealand sometimes considered a color phase of the white-headed stilt
Himantopus stilt: long-legged three-toed black-and-white wading bird of inland ponds and marshes or brackish lagoons

Other hypernyms of kaki include long-legs, longlegs, stilt, stilt plover, stiltbird.

kaki (noun)	Himantopus stilt (noun)
blackish stilt of New Zealand sometimes considered a color phase of the white-headed stilt	long-legged three-toed black-and-white wading bird of inland ponds and marshes or brackish lagoons
small deciduous Asiatic tree bearing large red or orange edible astringent fruit