ball-buster vs task

ball-buster and task both are nouns.

Word	Noun	Adjective	Verb	Adverb
ball-buster	Yes	No	No	No
task	Yes	No	Yes	No

As nouns, task is a hypernym of ball-buster; that is, task is a word with a broader meaning than ball-buster:

ball-buster: a job or situation that is demanding and arduous and punishing
task: a specific piece of work required to be done as a duty or for a specific fee

Other hypernyms of ball-buster include chore, job.

ball-buster (noun)	task (noun)
a job or situation that is demanding and arduous and punishing	a specific piece of work required to be done as a duty or for a specific fee
a demanding woman who destroys men's confidence	any piece of work that is undertaken or attempted

ball-buster (verb)	task (verb)
	use to the limit
	assign a task to