somniloquy vs sleeping

somniloquy and sleeping both are nouns.

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

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

Other hypernyms of somniloquy include process, unconscious process.

somniloquy (noun)	sleeping (noun)
uttering speech while asleep	the suspension of consciousness and decrease in metabolic rate
	quiet and inactive restfulness
	the state of being asleep

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