deadline vs curfew

deadline and curfew both are nouns.

Word	Noun	Adjective	Verb	Adverb
deadline	Yes	No	No	No
curfew	Yes	No	No	No

As nouns, curfew is a hyponym of deadline; that is, curfew is a word with a more specific, narrower meaning than deadline:

deadline (noun)	curfew (noun)
the point in time at which something must be completed	a signal (usually a bell) announcing the start of curfew restrictions
	an order that after a specific time certain activities (as being outside on the streets) are prohibited
	the time that the curfew signal is sounded