discipline vs grooming

discipline and grooming both are nouns.

Word	Noun	Adjective	Verb	Adverb
discipline	Yes	No	Yes	No
grooming	Yes	No	No	No

As nouns, grooming is a hypernym of discipline; that is, grooming is a word with a broader meaning than discipline:

Other hypernyms of discipline include preparation, training.

discipline (noun)	grooming (noun)
training to improve strength or self-control	the activity of getting dressed; putting on clothes
the act of disciplining	activity leading to skilled behavior
the trait of being well behaved
a branch of knowledge
a system of rules of conduct or method of practice

discipline (verb)	grooming (verb)
punish in order to gain control or enforce obedience
develop (a child's or animal's) behavior by instruction and practice; especially to teach self-control