twenty-four hours vs night

twenty-four hours and night both are nouns.

Word	Noun	Adjective	Verb	Adverb
twenty-four hours	Yes	No	No	No
night	Yes	No	No	No

twenty-four hours (noun)	night (noun)
time for Earth to make a complete rotation on its axis	darkness
	the time after sunset and before sunrise while it is dark outside
	a period of ignorance or backwardness or gloom
	the dark part of the diurnal cycle considered a time unit
	the time between sunset and midnight
	the period spent sleeping
	a shortening of nightfall