male vs bullock

male and bullock both are nouns.

Word	Noun	Adjective	Verb	Adverb
male	Yes	Yes	No	No
bullock	Yes	No	No	No

As nouns, bullock is a hyponym of male; that is, bullock is a word with a more specific, narrower meaning than male:

male: an animal that produces gametes (spermatozoa) that can fertilize female gametes (ova)
bullock: castrated bull

Other hyponyms of male include sire, colt, male horse, steer.

male (noun)	bullock (noun)
an animal that produces gametes (spermatozoa) that can fertilize female gametes (ova)	castrated bull
a person who belongs to the sex that cannot have babies	young bull

male (adjective)	bullock (adjective)
being the sex (of plant or animal) that produces gametes (spermatozoa) that perform the fertilizing function in generation
for or pertaining to or composed of men or boys
characteristic of a man