practice vs grooming

practice and grooming both are nouns.

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

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

Other hypernyms of practice include preparation, training.

practice (noun)	grooming (noun)
a customary way of operation or behavior	the activity of getting dressed; putting on clothes
systematic training by multiple repetitions	activity leading to skilled behavior
the exercise of a profession
translating an idea into action
knowledge of how something is usually done

practice (verb)	grooming (verb)
learn by repetition
engage in a rehearsal (of)
carry out or practice; as of jobs and professions
avail oneself to
engage in or perform