blue bull vs nylghai

blue bull and nylghai both are nouns.

Word	Noun	Adjective	Verb	Adverb
blue bull	Yes	No	No	No
nylghai	Yes	No	No	No

As nouns, blue bull and nylghai are synonyms defined as:

blue bull and nylghai: large Indian antelope; male is blue-grey with white markings; female is brownish with no horns

Other synonyms of blue bull include Boselaphus tragocamelus, nilgai, nylghau.

blue bull (noun)	nylghai (noun)
large Indian antelope; male is blue-grey with white markings; female is brownish with no horns	large Indian antelope; male is blue-grey with white markings; female is brownish with no horns