nap vs sleeping

nap and sleeping both are nouns.

Word	Noun	Adjective	Verb	Adverb
nap	Yes	No	Yes	No
sleeping	Yes	Yes	No	No

As nouns, sleeping is a hypernym of nap; that is, sleeping is a word with a broader meaning than nap:

nap (noun)	sleeping (noun)
sleeping for a short period of time (usually not in bed)	the suspension of consciousness and decrease in metabolic rate
a card game similar to whist; usually played for stakes	quiet and inactive restfulness
the yarn (as in a rug or velvet or corduroy) that stands up from the weave	the state of being asleep
a soft or fuzzy surface texture
a period of time spent sleeping

nap (adjective)	sleeping (adjective)
	lying with head on paws as if sleeping

nap (verb)	sleeping (verb)
take a siesta