puku vs antelope

puku and antelope both are nouns.

Word	Noun	Adjective	Verb	Adverb
puku	Yes	No	No	No
antelope	Yes	No	No	No

As nouns, antelope is a hypernym of puku; that is, antelope is a word with a broader meaning than puku:

puku: an African antelope closely related to the waterbuck
antelope: graceful Old World ruminant with long legs and horns directed upward and backward; includes gazelles, springboks, impalas, addax, gerenuks, blackbucks, dik-diks

puku (noun)	antelope (noun)
an African antelope closely related to the waterbuck	graceful Old World ruminant with long legs and horns directed upward and backward; includes gazelles, springboks, impalas, addax, gerenuks, blackbucks, dik-diks