hill myna vs myna bird

hill myna and myna bird both are nouns.

Word	Noun	Adjective	Verb	Adverb
hill myna	Yes	No	No	No
myna bird	Yes	No	No	No

As nouns, myna bird is a hypernym of hill myna; that is, myna bird is a word with a broader meaning than hill myna:

Other hypernyms of hill myna include mina, minah, myna, mynah, mynah bird.

hill myna (noun)	myna bird (noun)
glossy black Asiatic starling often taught to mimic speech	tropical Asian starlings