sleeping vs body process

sleeping and body process both are nouns.

Word	Noun	Adjective	Verb	Adverb
sleeping	Yes	Yes	No	No
body process	Yes	No	No	No

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

Other hypernyms of sleeping include activity, bodily function, bodily process.

sleeping (noun)	body process (noun)
the suspension of consciousness and decrease in metabolic rate	an organic process that takes place in the body
quiet and inactive restfulness
the state of being asleep

sleeping (adjective)	body process (adjective)
lying with head on paws as if sleeping