Choriotis australis vs bustard

Choriotis australis and bustard both are nouns.

Word	Noun	Adjective	Verb	Adverb
Choriotis australis	Yes	No	No	No
bustard	Yes	No	No	No

As nouns, bustard is a hypernym of Choriotis australis; that is, bustard is a word with a broader meaning than Choriotis australis:

Choriotis australis: popular Australian game bird
bustard: large heavy-bodied chiefly terrestrial game bird capable of powerful swift flight; classified with wading birds but frequents grassy steppes

Choriotis australis (noun)	bustard (noun)
popular Australian game bird	large heavy-bodied chiefly terrestrial game bird capable of powerful swift flight; classified with wading birds but frequents grassy steppes