noctambulation vs sleeping

noctambulation and sleeping both are nouns.

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

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

Other hypernyms of noctambulation include walk, walking.

noctambulation (noun)	sleeping (noun)
walking by a person who is asleep	the suspension of consciousness and decrease in metabolic rate
	quiet and inactive restfulness
	the state of being asleep

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