covering vs grooming

covering and grooming both are nouns.

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

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

Other hyponyms of covering include dressing.

covering (noun)	grooming (noun)
the act of protecting something by covering it	the activity of getting dressed; putting on clothes
the work of applying something	activity leading to skilled behavior
the act of concealing the existence of something by obstructing the view of it
an artifact that covers something else (usually to protect or shelter or conceal it)
a natural object that covers or envelops